Aeromedical Standards Decision Tool
Comprehensive reference: Air Factors, Risk Matrix, Medications, and Decision Support. References: AMA 100-01, FSG series.
Disclaimer: Always reference the most current published guidelines. This tool is a decision aid only. If you identify any discrepancies, please contact Braedon Hendy on DWAN.
Air Factor Definitions (AMA 100-01)
The Air Factor identifies the functional capacity of aircrew and communicates medical fitness status. A1-A4 are aircrew factors; A5-A6 are passenger factors; A7 indicates grounded status.
| Air Factor | Definition | Applies To |
|---|---|---|
| A1 | Medically fit for unrestricted duties | Pilots (MOSID 00183) |
| A2 | Medically fit for unrestricted duties in air operations | ACSO, Flight Engineers, AESOp, FTE, Mission Specialists |
| A3 | Medical operational flying or flight controlling restriction The specific restriction must be defined as part of the A3 (Medical Employment Limitations) |
Any CAF aircrew with restrictions |
| A4 | Medically fit for specific aircrew duties | SAR Specialists, AEC, AC Op, Loadmasters, Flight Stewards, AMTO, AvPhys Tech, Flight Surgeons, Flight Nurses, Flight Paramedics |
| A4 WSE | Temporary A4 (While So Employed) for designated period of aircrew duties | Flight Attendants, ASI Op, HSI Op, AWACS-ATIS Technicians |
| A5 | Medically fit to fly as passenger in CAF aircraft | Non-aircrew CAF personnel |
| A6 | Unfit to fly in CAF aircraft | CAF personnel unfit for any flight |
| A7 | Medically unfit to carry out MOSID-specific aircrew duties Grounded but typically may still fly as passengers (unless specifically restricted) |
CAF aircrew who are grounded |
Aeromedical Risk Matrix (AMA 100-01 Annex B)
The risk matrix combines likelihood of medical events with consequence severity. Risk increases toward upper right. Green = Low risk (generally acceptable), Yellow = Moderate risk (may require restrictions/mitigation), Red = High risk (generally requires grounding).
Event Class Definitions
- Minimal/no mission impact
- Low effect on performance
- Routine medical follow-up
- May result in mission abort
- Moderate performance effect
- Requires post-mission medical
- Flight safety hazard likely
- Major performance decrement
- Requires immediate medical
- Flight safety critical event
- Total incapacitation
- Requires advanced medical
Aircrew Risk Matrix
| Likelihood | Class 1 | Class 2 | Class 3 | Class 4 |
|---|
Pilots – Fighters, Tactical Helo, Maritime Rotary Wing, SAR rotary wing, Instructors of pre-wings students; SAR Technicians
Pilots – Transport, Maritime Fixed Wing, SAR Fixed Wing, Instructors of post-wings students
Non-pilot Group A – ACSO, FE, AESOp, MS, FTE, LM, AEC, ACOp (DCP), AMTO (chamber), Aeromed Tech, UAV Tier 1/2
Group B – Flight Surgeon, Flight Nurse, Flight Med Tech, Flight Steward, Flight Attendant, AWACS/ATIS, UAV Payload Ops
Categories 2–4 have progressively more tolerance for risk (more green cells) because medical events in these roles have less direct impact on flight safety compared to Category 1.
Risk Mitigation Strategies
Temporarily (until condition improves) or permanently. Period of grounding for observation may allow better definition of long-term risk.
Assign A3 Air Factor with specific operational restrictions designed to mitigate medical risk (e.g., "with or as co-pilot").
Use of medications or treatments to reduce risk of medical event. With treatment, risk may be reassessed to lower level.
Aircrew Group Classifications (AMA 100-01 Table 2)
Aircrew occupations are divided into Group A and Group B based on flight safety implications. Group A aircrew require annual PHAs; Group B aircrew require PHAs every 5 years (under 40) or every 2 years (40+).
- Pilot
- Air Combat Systems Operator (ACSO)
- Flight Engineer (FE)
- Loadmaster (LM)
- Airborne Electronic Sensor Operator (AESOp)
- Aerospace Controller (AEC)
- Aerospace Control Operator (AC Op) – DCP only
- Aeromedical Training Officer (AMTO)
- Aviation Physiology Technician (Av Phys Tech)
- Search and Rescue (SAR) Specialist
- Mission Specialist
- Flight Test Engineer (FTE)
- Flight Surgeon (FSurg)
- Flight Nurse
- Flight Paramedic
- Flight Steward
- Flight Attendant (WSE)
- Airborne Signal Intelligence Operator (ASI Op) (WSE)
- Hyper Spectral Imaging Operator (HSI Op) (WSE)
- AWACS-ATIS Technician (WSE)
- Aerospace Control Operator (AC Op) – non-DCP
WSE = While So Employed (temporary A4 for designated period)
Pick your pathway
Output
Aircrew Visual Requirements (FSG 400-01)
Comprehensive visual standards for CAF aircrew. Reference: FSG 400-01, AMA 100-01, AMA 400-02. Last reviewed: October 2024.
Visual Acuity Standards by Category
| Measurement | V1 Pilots (uncorrected) |
V2 Pilots & SAR |
V3 Other Aircrew |
V4 Flight Surgeon |
||||
|---|---|---|---|---|---|---|---|---|
| Better | Other | Better | Other | Better | Other | Better | Other | |
| Distance Vision | ||||||||
| Uncorrected | 6/6 | 6/9 | 6/18 or 6/12 |
6/18 or 6/30 |
6/60 | 6/60 | N/A | |
| Corrected | N/A | 6/6 | 6/9 | 6/6 | 6/9 | 6/9 | 6/60 | |
| Near Vision @ 30-50 cm | ||||||||
| Uncorrected | N5 | N6 | N10 or N8 |
N10 or N12 |
N/A | N/A | ||
| Corrected | N/A | N5 | N6 | N5 | N6 | N6 | N36 | |
| Near Vision @ 100 cm | ||||||||
| Uncorrected | N14 | N18 | N24 or N16 |
N24 or N36 |
N/A | N/A | ||
| Corrected | N/A | N14 | N18 | N14 | N18 | N18 | N36 | |
Note: V1 pilots must meet uncorrected vision standards; V2 pilots and SAR can meet standards with correction. V5 is not included as it is not typically compatible with any aircrew duties.
Refractive Error Limits
Spherical Equivalent (SE) = 1/2 cylinder + sphere
- SE > -8.00 D or > +3.00 D is disqualifying
- SE > -6.00 D requires dilated retinal exam
- Can consider refractive surgery for SE -8.00 D to +3.50 D
- Retinal lattice is disqualifying
- SE > -8.00 D with retinal pathology is disqualifying
- SE > +5.00 D is disqualifying
- Without retinal pathology, pre-op SE may exceed -8.00 D if corrected by acceptable surgery
Eye Examination Periodicity
Initial Aircrew
- Full aircrew eye exam including cycloplegic refraction required within 12 months before CFEME review
- Colour vision testing required only at initial PHA
- DND 2776 form must be used
Group A Aircrew (after initial)
- Every 4 years after initial exam until age 40 (every 2 years if using corrective lenses)
- Every 2 years after age 40
- Increased frequency for clinical conditions (e.g., glaucoma suspect, diabetes)
Group B Aircrew (after initial)
- Eye examination with each PHA per CFHS Instruction 4000-01
- Colour vision testing NOT required for subsequent PHAs unless clinical concern
Ocular Conditions
| Deviation Type | Limit | Notes |
|---|---|---|
| Vertical (hyperphoria/hypophoria) | < 2 prism diopters | At both 30-50cm and 6m |
| Horizontal (exophoria/esophoria) | Up to 10 diopters | Acceptable if no history of diplopia |
Keratoconus is progressive non-inflammatory thinning and distortion of the central cornea.
Acceptance after Collagen Cross-Linking (CXL):
- Stability demonstrated on two post-op corneal tomography exams, 12 months or more apart
- No increase in Kmax >1D, astigmatism >0.5D, or myopia >0.5D SE
- Meet visual standards with glasses
- Unfit if: post-op Kmax >58D or corneal thickness <400um
Glaucoma Suspects - Refer to Ophthalmologist if:
- IOP in either eye >22 mmHg
- IOP difference of 4 mmHg or more between eyes
- Pigmentary dispersion syndrome or narrow angles
- Suspicious optic nerve cupping or visual field defects
Other Disqualifying Retinal Conditions:
- History or evidence of retinal detachment
- Retinal hole with evidence of fluid or vitreous traction
- Central or peripheral retinal degeneration/dystrophies
- Central Serous Chorioretinopathy
Corrective Lenses & Surgery
Permitted Spectacle Lenses
| Type | Status | Grounding | Notes |
|---|---|---|---|
| Bifocals, Trifocals, Progressive Lenses | ✓ Acceptable | 7 days (first pair) | For aircrew requiring near and distance correction. Allows adaptation to focal distances and illusory movement. |
| Change from multifocal to progressive | ✓ Acceptable | 7 days | Same grounding required as first-time multifocal/progressive |
NOT Permitted for Aircrew
| Type | Status | Reason |
|---|---|---|
| Polarized Lenses | ✗ NOT Permitted | Prohibited for any aircrew duties |
| Transition (Photochromic) Lenses | ✗ NOT Permitted | Prohibited for any aircrew duties |
| Contact Lenses (medically required) | ✗ Disqualifying | Medically required use of a contact lens is a disqualifying condition |
Return to Flying with New Multifocal/Progressive Lenses
Prior to return to flying after the 7-day grounding period, a functional assessment is required:
- Ground check in the aircraft – assess adaptation, fit with other gear, and effective vision correction
- In-flight assessment – if ground check successful (simulator acceptable if available)
- Non-safety-critical flight – at least one flight on their specific platform in non-safety-critical role
Assessment should include a range of flight conditions (VFR/IFR approaches for pilots), use of all visual display systems, and evaluation of distance vision especially when landing. If functional assessment suggests problems, consult optometrist for possible lens design change.
Permitted Procedures
| Procedure | Status | Return to Duty |
|---|---|---|
| PRK | ✓ Permitted | 3 months (myopia/astigmatism), 6 months (hyperopia) |
| LASIK / SBK | ✓ Permitted | 6 weeks (myopia/astigmatism), 4-6 months (hyperopia) |
| SMILE | ✓ Permitted | 3 months |
NOT Permitted
- Radial Keratotomy (RK)
- Intrastromal Corneal Ring Segments (ICRS)
- Phakic intraocular lens implants
- Orthokeratology
- Keratoplasty (corneal transplant)
Certain types of intraocular lens implants are acceptable following cataract surgery provided there are no complications and all visual standards are met. Grounding is required during post-op recovery until at least 7 days after post-operative glasses are prescribed and in use.
IOL Requirements by Aircrew Group
| IOL Type | Group A | Group B |
|---|---|---|
| Monovision IOLs (including toric IOLs for astigmatism) |
✓ Permitted | ✓ Permitted |
| Multifocal IOLs | ✗ NOT Permitted | ⚠️ May be considered Requires CFEME approval + risk/benefit assessment |
| Extended Depth of Focus IOLs | ✗ NOT Permitted | ⚠️ Case-by-case Consult CFEME |
| Accommodative IOLs | ✗ NOT Permitted | ⚠️ Case-by-case Consult CFEME |
IOLs NOT Permitted for Any Aircrew
| IOL Type | Status | Reason |
|---|---|---|
| Silicone IOLs | ✗ NOT Permitted | Not acceptable for any aircrew duties |
| Blue Blocker IOLs | ✗ NOT Permitted | Blue blocking feature not allowed (standard UV protection is fine) |
Return to Flying Requirements
- Minimum 7-day grounding after post-op glasses prescribed
- All visual standards must be met
- No post-operative complications
- Group B with multifocal IOL: Functional assessment based on occupational tasks required
Quick Reference: Disqualifying Conditions
| Condition | Details |
|---|---|
| Diplopia | In any field of gaze |
| Untreated Keratoconus | Or suspicious corneal changes |
| Glaucoma (uncontrolled) | Optic nerve changes, field loss, or IOP >28 mmHg |
| Retinal Detachment | History or evidence |
| Lattice + Myopia >-6D SE | Any degree of lattice with high myopia |
| Group A: SE >-8.00D or >+3.00D | Including pre-surgery refractive error |
| Group B: SE >+5.00D | Hyperopia limit |
| Radial Keratotomy | Disqualifying for all aircrew |
| Silicone IOLs | Not permitted for any aircrew |
| Blue Blocker IOLs | Blue blocking feature not permitted |
| Group A: Multifocal/EDOF/Accommodative IOLs | Only monovision IOLs (incl. toric) permitted for Group A |
| Polarized Lenses | Prohibited for all aircrew duties |
| Transition (Photochromic) Lenses | Prohibited for all aircrew duties |
Reference: FSG 400-01, AMA 100-01, AMA 400-02. For borderline cases, contact CFEME.
Medications and Aircrew Reference (FSG 1900-01)
Comprehensive medication guidance for Flight Surgeons and BAvMed providers. Last reviewed: September 2025. Aircrew are prohibited from self-medication per Flying Orders.
Antihistamines
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| First-line (non-sedating) Loratadine (Claritin), Fexofenadine (Allegra), Desloratadine (Aerius), Rupatadine (Rupall), Bilastine (Blexten) |
✓ Approved | 3 days initial | No anticholinergic or CNS effects. No alcohol within 24hrs prior to use. After initial assessment, no restriction for recurrent intermittent use. |
| Second-line (may cause drowsiness) Cetirizine (Reactine), Clemastine (Tavist) |
⚠ Exceptional use only | 8 days initial | May produce drowsiness/CNS effects. Only after failed trial of loratadine, desloratadine, or fexofenadine. No alcohol within 24hrs prior to use. |
| First-generation (sedating) Diphenhydramine (Benadryl), Dimenhydrinate (Gravol), Chlorpheniramine |
✗ Not permitted | N/A | Sedating and anticholinergic effects incompatible with flight duties |
Allergy Desensitization
| Type | Status | Grounding | Notes |
|---|---|---|---|
| SCIT (Subcutaneous Immunotherapy) | ✓ Approved | 12 hrs after initiation/escalating dose; 4 hrs after maintenance dose | Return to flying only if no adverse systemic effects. May require Geographic Factor TCAT for monthly follow-up. |
| SLIT (Sublingual Immunotherapy) White Birch (Itulatek), Grass Pollen (Oralair) |
✓ Approved | 7 days after first dose; 4 hrs after maintenance | Permitted as monotherapy only; dual/multiple therapy not approved. Mild local reactions common but usually abate within 1 hour. |
Regional and General Anesthetics
| Type | Minimum Grounding | Notes |
|---|---|---|
| General, spinal, or epidural anesthetic | 72 hours (3 days) | May return if no adverse effects; longer grounding may be needed for surgical recovery |
| Major peripheral nerve blocks | 48 hours | May return if no adverse effects |
| Short-acting IV sedative (midazolam, ketamine, fentanyl) | 72 hours | May return if no side effects |
| Local/regional anesthetic (minor procedures, dental) | 12 hours | May return if no adverse effects |
Oral Analgesics
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| NSAIDs (Ibuprofen, Naproxen, Oxicams, Celecoxib) | ✓ Approved | First week: take after duty, ≥10 hrs before next shift | Condition must not interfere with safe duty performance. After 1 week with no side effects, no restriction for intermittent/ongoing use. Prolonged use (>2 weeks) requires GI protection (PPI or misoprostol). Oxicams and celecoxib acceptable for short or long term use. Brief aircrew on potential GI side-effects. |
| ASA (Aspirin) | ✓ Approved | First week: take after duty, ≥10 hrs before next shift | Same provisions as NSAIDs. Caution on self-medicating with OTC ASA. |
| Acetaminophen | ✓ Approved | None | No restriction required |
| Muscle Relaxants (e.g., Norflex) | ✗ Not permitted | At least 5 half-lives | Not compatible with flying duties due to sedation |
| Narcotics/Opioids | ✗ Not permitted | Based on half-life | Must be fully metabolized before return to flying |
Antihypertensives
| Medication Class | Status | Grounding | Notes |
|---|---|---|---|
| Thiazide Diuretics (Chlorthalidone preferred over HCTZ) | ✓ Approved | 2-4 weeks initial | Long-acting preparations preferred. Ungrounding after 2 weeks if: BP controlled, no side effects, orthostatic vitals normal |
| ACE Inhibitors / ARBs | ✓ Approved | 2-4 weeks initial | Same criteria as thiazides. High-G exposure requires repeat G-tolerance assessment |
| Calcium Channel Blockers (Amlodipine, Felodipine, Nifedipine) | ✓ Approved | 2-4 weeks initial | Long-acting dihydropyridines only. Not first-line for high-G environment due to vasodilatory effect |
| Beta Blockers | ⚠ Case-by-case | Variable | Generally not recommended due to exercise intolerance; may be considered in specific cases with ASCS review |
Lipid-Lowering Agents
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| Statins (Atorvastatin, Rosuvastatin, etc.) | ✓ Approved | 14 days initial | If no side effects (particularly myalgias), no ongoing restriction |
| Ezetimibe | ✓ Approved | 7 days initial | May be used alone or with statin |
| PCSK9 Inhibitors Evolocumab (Repatha) |
✓ Approved | 2 weeks initial | May be considered for aircrew who do not tolerate statins or fail to reach targets with statin and ezetimibe |
Antidepressants (FSG 1400-01)
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| FIRST LINE - Approved and Preferred | |||
| Sertraline (Zoloft) | ✓ Approved | A7 until clinically stable on same regimen for minimum 2 months | These medications have had specific aeromedical performance evaluations. Monotherapy preferred. Return to duty assessment per FSG 1400-01 |
| Citalopram (Celexa) | ✓ Approved | ||
| Escitalopram (Cipralex) | ✓ Approved | ||
| Bupropion (Wellbutrin) | ✓ Approved | ||
| SECOND LINE - If first-line not clinically suitable | |||
| Duloxetine (Cymbalta) | ⚠ Second line | Same as first line | Not aeromedical-specific evaluated but may be used if best clinical choice |
| Desvenlafaxine (Pristiq) | ⚠ Second line | ||
| Vortioxetine (Trintellix) | ⚠ Second line | ||
| NOT APPROVED | |||
| Venlafaxine (Effexor) | ✗ Not permitted | N/A | Discontinuation effects with missed doses, short half-life |
| Paroxetine (Paxil) | ✗ Not permitted | N/A | Discontinuation effects with missed doses, short half-life |
| Benzodiazepines, Antipsychotics, Mood stabilizers, Stimulants | ✗ Not permitted | N/A | Not compatible with active flight or control positions |
Sleep Medications (Operational Use Only - FSG 1400-03)
| Medication | Trade Name | Half-life | Dosage | Grounding Required |
|---|---|---|---|---|
| Temazepam | Restoril | 8-9 hrs | 7.5/15 mg | 12 hours |
| Zopiclone | Imovane | 5 hrs | 3.75/5/7.5 mg | 12 hours |
| Zolpidem | Sublinox | 2-3 hrs | 5 mg | 6 hours |
| Melatonin SR | — | — | 1-3 mg SR | Not required (must ground-test first) |
Must be ground-tested before operational use (FSG 1400-03 Annex F). Start with smallest dose; max quantity 7. Other antihistamines or benzodiazepines must not be used for sleep. Triazolam (Halcion) prohibited due to hallucination reports.
Diabetes Medications - Treatment Ladder (FSG 900-01)
| Step | Medication | Grounding Period | Notes |
|---|---|---|---|
| Lifestyle management | Diet, Exercise, Education | No grounding | First-line for all newly diagnosed |
| Add Biguanide | Metformin | 14 days | First-line medication; safe profile, low hypoglycemia risk |
| Add DPP4 inhibitor | Linagliptin, Saxagliptin, Sitagliptin | 30 days | Low hypoglycemia risk |
| Add SGLT2 inhibitor | Canagliflozin, Dapagliflozin, Empagliflozin | 30 days | Monitor for dehydration/DKA risk |
| Add GLP-1 agonist | Semaglutide, Liraglutide | 30 days initial; 72 hrs each dose increase | Discontinue DPP4i when adding GLP-1a |
| Add Basal Insulin | Glargine, Detemir | Minimum 90 days; ASCS review; specialist consult mandatory | Requires ASCS approval |
| Add Bolus Insulin | Lispro, Aspart | Generally disqualifying; Min 180 days; ASCS review | Specialist consult mandatory; high hypoglycemia risk |
Sulfonylureas: Generally not approved due to hypoglycemia risk.
Antibiotics, Antifungals, Antivirals
| Medication | Grounding | Notes |
|---|---|---|
| All antibiotics, antifungals, antivirals | 4 days minimum | Most serious adverse events occur in first 48 hrs. Must be seen by FS/BAvMed to be ungrounded. Ensure acute illness resolved and no drug side effects. |
| Fluconazole (Diflucan) – single dose For uncomplicated vaginal candidiasis |
24 hours | Single oral dose only. Effective treatment for vaginal candidiasis with shorter restriction. |
| Minocycline | Avoid | High incidence of vestibular side effects. TMP-SMX can also cause vestibular effects. |
| HSV treatment/suppression (oral antivirals) | 4 days initial | If no side effects, no grounding for intermittent or long-term use |
Immunizations
| Vaccine | Grounding | Notes |
|---|---|---|
| Routine immunizations (Influenza, Yellow Fever, Japanese Encephalitis, etc.) | 12 hours | May fly without restriction if no adverse effects |
| COVID-19 vaccination | 48 hours | Also 48 hr no-diving. If adverse effects persist >72 hrs or are severe/atypical, see AvMed provider |
| Immune globulin (SC/IM) | Not routinely required | IVIG requires AvMed consult before return |
| Traveler's diarrhea prophylaxis | None | No aircrew restriction needed |
Malaria Chemoprophylaxis
| Medication | Status | Notes |
|---|---|---|
| Atovaquone-Proguanil (Malarone) | ✓ Preferred | Preferred agent for aircrew |
| Doxycycline | ✓ Approved | Acceptable alternative |
| Mefloquine | ✗ Not permitted | Neuropsychiatric side effects; not approved for aircrew |
Acid Suppression
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| Proton Pump Inhibitors (Pantoprazole, etc.) | ✓ Approved | None | Most efficacious for GERD; no grounding required |
| H2 Blockers (Ranitidine HS dosing) | ✓ Approved | None | Acceptable for maintenance therapy |
| Antacids (Maalox TC, Mylanta II) | ✓ Approved | None | No restriction |
Active GI ulcer disease requires grounding. Suspected ulcers should undergo endoscopy including H. pylori biopsy.
Motion Sickness
| Medication | Status | Notes |
|---|---|---|
| Scopolamine (transdermal patch) | ⚠ Limited use | May be used for formal airsickness desensitization program or short-term (≤3 days) for sea transport. Requires ground testing. |
| Dimenhydrinate (Gravol) | ✗ Not permitted | Sedating antihistamine; not compatible with flight duties |
Contraceptives (Female)
| Type | Status | Grounding | Notes |
|---|---|---|---|
| Oral contraceptives, Hormonal IUDs, Subdermal implants, Injection | ✓ Approved | 7 days on initiation | If no side effects, no restriction for ongoing use |
| Emergency contraception - Levonorgestrel (Plan B) | ✓ Approved | 24-48 hrs | Based on side effects experienced |
| Emergency contraception - Ulipristal acetate (Ella) | ✓ Approved | 24-48 hrs | For use within 5 days of unprotected intercourse |
Menopausal Hormone Therapy
| Menopausal HT (women <60 or <10 yrs post-menopause) | ✓ Approved | 7 days | When clinically recommended |
Benign Prostatic Hypertrophy
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| 5-alpha reductase inhibitors (Finasteride/Proscar, Dutasteride/Avodart) | ✓ Approved | 7 days | All aircrew |
| Alpha blockers (Alfuzosin, Doxazosin, Tamsulosin, Terazosin) | ⚠ Restricted | 2 weeks | Non-pilots: may return to usual duties if no adverse effects. Pilots: must fly with/as copilot, unfit fast jets |
Erectile Dysfunction
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| Sildenafil (Viagra), Vardenafil (Levitra) | ✓ Approved | 48 hrs after each use | Concerns over effects on colour vision |
| Tadalafil (Cialis) | ✗ Not recommended | N/A | Longer half-life (18 hrs) not recommended for actively flying aircrew |
Glaucoma Medications
| Medication | Status | Grounding |
|---|---|---|
| Topical adrenergic agents, Topical beta-blockers, Prostaglandin analogues (Xalatan) | ✓ Approved | 7 days initial |
Examinations
| Cycloplegic refraction / Dilated fundoscopy | 24 hours | Anticholinergic effects (especially cyclopentolate) may last up to 24 hrs |
Steroids
| Type | Status | Notes |
|---|---|---|
| Systemic corticosteroids | ✗ Not compatible | Not compatible with flight duties for any aircrew |
| Inhaled and topical intranasal corticosteroids | ✓ Approved | No operational flying restriction |
| Viscous/orodispersible steroids (for eosinophilic esophagitis) | ✗ Not permitted | Not permitted for aircrew duties |
| Anabolic steroids (testosterone for deficiency) | ✓ Approved | Initial grounding per pharmacokinetics; monitor levels. Use for body building not permitted. |
DMARDs and Biologics
DMARDs and biologic medications require case-by-case ASCS review due to variable side effect profiles and monitoring requirements. All cases should be referred to ASCS at initiation of treatment.
| Medication Class | Status | Notes |
|---|---|---|
| Methotrexate | ⚠ Case-by-case | May be considered for some aircrew with appropriate monitoring; refer to ASCS |
| TNF-alpha inhibitors | ⚠ Case-by-case | 6-month TCAT with G/O restrictions during initialization; ASCS review required |
| Interleukin inhibitors | ⚠ Case-by-case | Variable side effects; ASCS review required |
Gout Medications
| Medication | Status | Grounding | Notes |
|---|---|---|---|
| Allopurinol Gout prophylaxis |
✓ Approved | 14 days initial | Indicated for prophylaxis after recurrent episodes of gout. Risk of precipitating gout episode during initiation (should generally be done with colchicine coverage). After initial grounding, no ongoing restriction. |
Asthma Medications
| Medication | Status | Notes |
|---|---|---|
| Inhaled corticosteroids | ✓ Approved | No restriction for mild, controlled asthma |
| Short-acting beta-agonists (Salbutamol PRN) | ✓ Approved | For rescue use in mild asthma |
| Long-acting beta-agonists (with ICS) | ⚠ Case-by-case | More severe asthma may require grounding and MELs |
| Oral bronchodilators (Theophyllines) | ✗ Not permitted | Not compatible with flying |
| Long-acting muscarinic agents (for COPD/asthma) | ✗ Not permitted for flying | May be considered for ground-based duties only |
Alertness & Caffeine
| Substance | Status | Notes |
|---|---|---|
| Caffeine | ✓ Permitted | Moderate use permitted; max 400 mg/day. Operational use as part of authorized fatigue management per FSG 1400-03 |
| Modafinil, Dextroamphetamine | ✗ Not approved | Not approved for CAF aircrew |
Supplements
| Supplement | Status | Notes |
|---|---|---|
| Creatine monohydrate | ✓ Approved | No restriction when used as directed |
| Other herbal/supplements | ⚠ Consult FS | Aircrew should consult Flight Surgeon before using any supplements; many contain undisclosed ingredients |
Quick Reference – Minimum Temporary Flying Restrictions (FSG 300-01)
| Exposure/Procedure | Minimum Grounding |
|---|---|
| General, spinal, or epidural anesthetic | 72 hours |
| Peripheral nerve blocks (major) | 48 hours |
| Short-acting IV sedative | 72 hours |
| Local/regional anesthetic (minor) | 12 hours |
| Blood donation | 72 hours |
| Platelet/Plasma donation (<450 cc) | 24 hours |
| Bone marrow donation | 2 weeks |
| Simulator | 12 hours |
| Spatial Disorientation training | 12 hours |
| Centrifuge | 12 hours |
| Allergy Desensitization (initiation) | 12 hours |
| Allergy Desensitization (maintenance) | 4 hours |
| Routine Immunization | 12 hours |
| COVID-19 Vaccination | 48 hours |
| Gas Hut training (CS gas) | 2 hours |
| Cycloplegic exam | 24 hours |
| ROBD / CADO | 2 hours |
| Flying after diving | 24 hours (rule of thumb) |
| RUET | 4 hours |
| DCS | Requires aviation medicine provider assessment |
| Ground pressurization testing | 30 min to 48 hrs depending on exposure |
Aeromedical Evacuation (AE) Overview
Reference: SOP 417, AE Aide-Memoire, STANAG 3204. Last reviewed: November 2024. The RCMS and RCAF are jointly responsible for timely AE for all CAF members.
AE Definitions
| Type | Definition |
|---|---|
| Forward AE (Fwd AE) | Airlift for patients between point of injury/illness and the initial point of treatment within the AOR |
| Tactical AE (Tac AE) | Air transport for patients between MTFs within the AOR (intra-theatre) |
| Strategic AE (Strat AE) | Air transport from MTFs within the AOR to MTFs outside the AOR, or between MTFs outside the AOR (inter-theatre, including return to Canada) |
Key Contacts (24/7/365)
- Work: +1 (204) 833-2500 x 257 5728 (business hours)
- Mobile: +1 (204) 228-7302 (after hours)
- Email: AECO@forces.gc.ca
- Mobile: +1 (204) 801-8983 (after hours)
If AECO and Duty Div Surg cannot be reached:
- Work: +1 (204) 833-2500 x 257 2650
- Direct: +1 (204) 833-2650
- Toll Free: +1 (888) 233-7077
- Email: SODO@forces.gc.ca
Strategic AE Process Flowchart
Sending Physician Checklist
The sending physician is responsible for initiating the AE process and ensuring all documentation is complete.
| ✓ | Task | Notes |
|---|---|---|
| Contact Duty AECO as soon as possible | Notify early to prevent delays | |
| Determine Move Window | Earliest and latest time patient can be moved (Date/Time Group format) | |
| Contact Destination Medical Facility (DMF) | Ensure receiving physician and in-patient bed are available | |
| Contact Base/Wing Surgeon at destination | Discuss patient and pending AE mission | |
| Submit Strategic AE Request form | Include Initial MEDSITREP with Priority, Classification, Dependency | |
| AE Mission VALIDATED by 1 CAD Surg or designate | Required before mission proceeds | |
| Provide Daily MEDSITREP updates | To AECO, Duty Div Surg, Receiving physician, Receiving W/B Surg | |
| Coordinate ground transport from OMF to flight line | Ensure Level of Care capability is adequate; notify AECO of arrangements | |
| Notify AECO of any accompanying personnel | Medical personnel, DA, NOK – at discretion of AE Team | |
| Accompany patient to flightline | Handover documentation, medications to AE Team |
Receiving Physician Checklist
| ✓ | Task | Notes |
|---|---|---|
| Receive initial MEDSITREP | From sending physician or Duty 1 CAD Flight Surgeon | |
| Assist with coordinating local medical care | Ensure receiving physician and in-patient bed are available | |
| Receive daily MEDSITREPs | Track patient condition prior to arrival | |
| Coordinate ground transport from flight line to DMF | Ensure Level of Care capability is adequate; notify AECO of arrangements | |
| Arrange local medical unit rep to meet aircraft | Provide contact info to AECO | |
| Notify AECO of any VIPs/CoC meeting aircraft | Coordinate additional personnel at destination | |
| Meet aircraft at flightline | Receive patient and documentation from AE Team | |
| Accompany patient to DMF | Ensure handover to receiving civilian medical team | |
| Establish continued follow-up plan | In conjunction with receiving Base/Wing Surgeon |
Patient Priority, Classification & Dependency
Reference: STANAG 3204 Amd (Edition 7). These categories must be assigned in the AE Request.
| Priority | Definition |
|---|---|
| 1 - Urgent | Emergency patients for whom speedy evacuation is necessary to save life, prevent complications, or avoid serious permanent disability |
| 2 - Priority | Patients who require specialized treatment not available locally and who are liable to deteriorate unless evacuated with the least possible delay |
| 3 - Routine | Patients whose immediate treatment is available locally but whose prognosis would benefit from air evacuation on routine scheduled flights |
Neuropsychiatric Patients
| Class | Description |
|---|---|
| 1A - Severe | Unstable mental state requiring restraint, sedation, and close supervision |
| 1B - Intermediate | No restraint needed currently but may react badly to air travel or commit acts endangering themselves/aircraft. Need close supervision; may need sedation |
| 1C - Mild | Cooperative and reliable under pre-flight observation |
Stretcher Patients (Non-Psychiatric)
| Class | Description |
|---|---|
| 2A - Immobile | Unable to move about of their own volition under any circumstances |
| 2B - Mobile | Able to move about of their own volition in an emergency |
Sitting Patients (Non-Psychiatric)
| Class | Description |
|---|---|
| 3A - Sitting | Sitting patients (incl handicapped) who would require assistance to escape in emergency |
| 3B - Sitting | Sitting patients able to escape unassisted in an emergency |
Walking Patients
| Class | Description |
|---|---|
| 4 - Walking | Walking patients (non-psychiatric) who are physically able to travel unattended |
| Dependency | Description | Examples |
|---|---|---|
| 1 - High | Intensive support required during flight | Ventilation, CVP monitoring, cardiac monitoring; may be unconscious or under GA |
| 2 - Medium | Regular, frequent monitoring; condition may deteriorate | Combination of O2, one or more IV infusions, multiple drains/catheters |
| 3 - Low | Not expected to deteriorate but requires nursing care | Simple O2, single IV infusion, urinary catheter |
| 4 - Minimal | No nursing attention required in flight | May need assistance with mobility or bodily functions |
Required Information for AE Request
The following information is required for Patient Movement Request (PMR) / Strategic AE Request.
- Name, Rank, SN
- Gender, DOB
- Parent unit, MOC/MOSID
- Patient ID (if applicable)
- Move Window: Earliest/Latest date/time patient can be moved
- Name of OMF, Ward, Phone
- Attending/Referring Physician (Phone, Email)
- Referring CAF Physician (Phone, Email)
- Admin POC at OMF (Phone, Email)
- Name of DMF, Ward, Phone
- Attending/Receiving Physician (Phone, Email)
- Receiving Base/Wing Surgeon (Phone, Email)
- Admin POC at DMF (Phone, Email)
- Priority: 1 (Urgent) / 2 (Priority) / 3 (Routine)
- Classification: 1A-1C / 2A-2B / 3A-3B / 4
- Dependency: 1 (High) - 4 (Minimal)
- Additional AE crew required? (specify)
- Special equipment required? (specify)
- Altitude restrictions? (specify)
- NOK accompanying? (Name, Sex)
Initial MEDSITREP Content
Daily MEDSITREPs must be provided to AECO, Duty 1 CAD Surg, receiving physician, and AE Team. If no changes, communicate this.
- Date, Attending Physician, OMF, Admission Date
- Allergies
- Relevant past medical history
- Medications prior to injury/illness
- Diet
- Life habits (Tobacco, Alcohol)
- Consent to release information: To medical personnel (Y/N), To chain of command (Y/N), NOK notification (Y/N), Limitations
- Date of injury/illness
- Description/Mechanism of Injury/Illness
- Initial Injuries / Diagnosis
- Physician Notes (including ongoing issues/plan)
- Current Medications
- Apparatus (lines, tubes, drains, equipment)
- Consultation Reports
- Operative Procedures
- Imaging and Dx Tests
- Labs/Hemodynamics
- Urine Analysis
- Mental Health Issues
- Infectious Disease Screening
Record daily progress notes in reverse chronological order (most recent first).
Include: vital signs, clinical status changes, new investigations/results, changes to treatment plan, anticipated move readiness.
AE Team Composition & MSTM
Reference: Admin Instruction – AE Medical Specialist Team Member. The basic AE team consists of Flight Nurse + Flight Med Tech. Additional specialists may be requested.
| Role | Readiness | Location |
|---|---|---|
| Primary Basic AE Team (FN + FMT) | 12 hours NTM | 8 Wing Trenton |
| Secondary Basic AE Team | 48 hours NTM | 8 Wing Trenton |
| MSTM Type | MOC/MOSID | Required Qualifications |
|---|---|---|
| Flight Surgeon (Flt Surg) | 00393 Medical Officer | BLS, ACLS, Basic AvMed Course (AJRI), Flight Surgeon Course (ADWS) |
| Critical Care Medical Specialist | 00390 Medical Specialist | BLS, ACLS, Current ICU/IM/Anesth/EM/GenSurg time. Desired: AJRI, ADWS, CCAES Course |
| Critical Care Nursing Officer (CCNO) | 00195-02 NO CC | BLS, ACLS, NO:CC (ADYF), Current CCAES Course or recent AE mission, Current ICU/ER time |
| Mental Health Nursing Officer (MHNO) | 00195-02 NO MH | BLS, ACLS, NO:MH (ADYH), Current MH clinical time. Optional: AE course (AHUT) |
MSTM Geographic Areas:
- 12h NTM: Borden, Kingston, Montreal, Ottawa, Petawawa, Toronto, Trenton
- 48h NTM: Above + Comox, Edmonton, Gagetown, Greenwood, Halifax, Victoria, Vancouver, Winnipeg
- Current Heart & Stroke Foundation ACLS and BLS for Health Care Providers
- High readiness immunizations: Hep A, Hep B, MMR, Meningococcal (booster q5yr), Pertussis, Polio, Seasonal Flu (annually), Typhoid, Td, Yellow Fever, COVID
- Current N95 Mask fit testing (expires every 2 years)
- If on TCAT with MELs, provide copy to AECO
Tactical AE (Intra-Theatre)
For movement between MTFs within the Area of Operations.
- Name/Rank/SN
- Date of Birth (DOB)
- Unit
- Relevant medical history / History of presenting injury or illness
- Originating Medical Facility (OMF)
- Sending/Referring physician
- Destination Medical Facility (DMF) – if known
- Receiving physician – if known
- Move Window (Earliest/Latest time based on clinical condition)
- Additional support/equipment required, if applicable
Quick Reference Summary
| To initiate AE: | Contact AECO immediately: +1 (204) 228-7302 or AECO@forces.gc.ca |
| Required forms: | Strategic AE Request + Initial MEDSITREP (both on 1 CAD Surg Website) |
| Validation required: | All AE missions must be validated by 1 CAD Surg or designate |
| Daily updates: | MEDSITREP to AECO, Duty 1 CAD Surg, receiving physician, AE Team |
| Ground transport: | Sending physician coordinates OMF→flightline; Receiving physician coordinates flightline→DMF |
| Civilian AE: | Only AECO can initiate civilian contracted AE – physicians do NOT have this authority |
References: SOP 417 (Procedure for Initiating Strategic and Tactical AE Missions), AE Aide-Memoire for Sending and Receiving Physicians, STANAG 3204, Admin Instruction – AE MSTM, 1 Cdn Air Div Flight Operations Manual Ch 2.
Flight Investigation – BMed/Flight Surgeon Immediate Actions
This section covers immediate investigation points for the Base Medical Officer (BMed) or Flight Surgeon responding to an aircraft occurrence. Reference: A-GA-135-002/AA-001 Occurrence Investigation Techniques, A-GA-135-003/AG-001 Airworthiness Investigation Manual.
🚨 Immediate Response Checklist
Actions for the responding Flight Surgeon/BMed upon notification of an aircraft occurrence.
- Patient Care First: Triage and care for survivors takes absolute priority
- Coordinate Toxicology Samples: Arrange with Wing Surgeon for toxicology samples of all aircrew (and others as required by IIC – ATC, ground crew, etc.)
- Contact DFS Flight Surgeon: Coordinate POCT kit use and specimen collection procedures. Call 1-888-WARN-DFS (1-888-927-6337) for off-hours
- Coroner Liaison: If fatalities involved, coordinate with local coroner/medical examiner regarding removal and disposition of remains
- Do NOT disturb remains until coroner or CO approval and photographs have been taken
- Review CraSH Matrix: Assess crash scene hazards before site entry
- Make notes immediately while details are fresh (pencil works best in all weather)
- Use audio recorder from Flight Surgeon's Investigation Kit
- Arrange colour photography of remains in relation to life support equipment, aircraft structures
- Record body location, position, and visible injuries using sketches and photographs
- Identify bodies and dismembered parts by name, location stake, and tag
Crash Scene Hazard (CraSH) Matrix – Pocket Guide
Review and revise at minimum when site conditions change and/or at the beginning of each shift on site. Reference: A-GA-135-002 Chapter 6 Annex A.
| Hazard | Exposure Route | Risk | Control Measures |
|---|---|---|---|
| Physical Broken structures, Composite fibres (CF), Explosives, Radiological, Stored energy |
Cuts, Punctures, Crush, Inhalation/ingestion, Contact/proximity | HIGH Likely Probability, Critical Severity |
Control access, Avoid/cordon, Disarm, Decontaminate, No eating on site, Wear PPE, Apply Fixant (CF) |
| Chemical POL, Metals/oxides, Viton (rubber), Hydrazine |
Inhalation, Ingestion, Contact | MEDIUM Likely Probability, Moderate Severity |
Control access, Avoid/cordon, Neutralize, Decontaminate, No eating on site, Wear PPE |
| Environmental Cold/heat, Terrain, Fatigue, Insects/wildlife, Enemy/Security |
Variable exposure | MEDIUM Likely Probability, Moderate Severity |
Control access, Site security, Work/rest cycles, Feeding/hydration, Insect repellent, Weather-appropriate clothing, PPE |
| Psychological Traumatic exposure (direct and indirect/vicarious) |
Direct exposure, Indirect exposure (narratives) | MEDIUM → May be HIGH with multiple fatalities |
Control access, Work/rest cycles, Monitoring, Limit exposure, Control information release, PPE |
| Biological Blood Borne Pathogens (HIV, Hep B/C) |
Cuts, Punctures, Via mucous membranes | LOW Unlikely Probability, Critical Severity |
Control access, Decontaminate, No eating on site, Wear PPE, Vaccinate (advance vaccination encouraged/may be mandatory) |
Note: Radiological risk is typically LOW (improbable exposure). Psychological effects may manifest well after the investigation – remain vigilant for delayed reactions.
Toxicology & Specimen Collection
Coordinate with DFS Flight Surgeon BEFORE testing. Collection may begin immediately but discuss procedures first.
- Accident Investigation Kit: Plotting, audio recording, photographic equipment
- Point-of-Care Test (POCT) Kits: Rapid urine toxicology
- Medical Specimen Transfer Units (MSTU): For specimen collection and transport
ALL specimen collection must be coordinated with DFS Flight Surgeon
- All aircrew
- ATC personnel (as required by IIC)
- Ground servicing crew (as required by IIC)
- Others as directed by IIC
Human Factors Assessment
In the aetiological assessment, the following factors must be considered. Reference: A-GA-135-002 Chapter 4.
| Category | Key Assessment Points |
|---|---|
| Hypoxia | Signs prior to/during accident sequence? Type: Stagnant, Hypemic, Hypoxic, or Histotoxic? |
| Spatial Disorientation | Vestibular illusions (somatogyral, somatogravic, leans, Coriolis, elevator, giant hand), Visual illusions (black hole, false horizon, height-depth misperception) |
| G-Effects | History of low G-tolerance? Signs of G-LOC or A-LOC? |
| Hyperventilation | Signs prior to/during accident sequence? |
| Decompression Sickness | Recent altitude exposure? Failed pressurization? Recent diving? |
| Trapped Gas Disorders | Sinus/ear pain, lung issues, GI discomfort during ascent/descent? |
Acute Fatigue
- Hours of uninterrupted sleep in last regular sleep period?
- Hours elapsed between last sleep period and accident?
- Any nap between last sleep and accident flight?
- Activity level between last sleep and flight (low/moderate/high)?
- Was sleep period interrupted?
Chronic Fatigue
- Duty hours in 7-day period prior to accident?
- Total sleep hours in 7-day period prior?
- Days since last leave period? Duration and type of leave?
- Review MALA for FRMS data (coordinate with Operations Group)
Circadian Factors
- Time zones crossed within 48 hours?
- First night flight after series of day flights?
- First day flight after series of night flights?
- Irregular waking/sleeping schedules preceding accident?
- Mental fatigue (acute or chronic)?
- Personality factors affecting performance?
- Emotional state (anxiety, anger, depression)?
- Attitude issues (complacency, overconfidence)?
- Mental limitations (task exceeded capability)?
- Recent significant life events?
- Financial stress or legal issues?
- Relationship/family changes?
- Changes in social habits (drinking, smoking, eating, sleeping)?
- Work-related stressors?
- Was pilot taking any drugs or medications at time of accident?
- Were these prescribed by a Flight Surgeon or self-medicating?
- Purpose: treatment of disease, prevention, weight management, mood alteration, birth control, other?
- Any homeopathic supplements or recreational substances?
- Alcohol consumption within 24 hours? Amount and timing?
- Anthropometrics: Height, weight, body habitus. Could sitting height, reach, leg length, shoulder width be a factor?
- Physical Condition: Fitness level (unfit, average, athletic)?
- Physical Strength: Relative strength for age/body type? Could strength be a factor?
- Physical Fatigue: Due to prolonged activity, brief extreme activity, or both?
- Task Saturation: Did task difficulty or number of tasks exceed physical capacity?
- Vision: MELs for vision? Glasses/contacts worn? Current prescription? Wearing at time of accident?
Aircrew Examination
The medical member of the FSI will question and examine aircrew to obtain the following information.
- Flying and Personal History – refer to B-MD-007-000/AF-003
- Injury Description – detail mechanism, correlate with life support equipment damage
- Psychological and Physiological Factors – that may have affected aircrew performance
- Review medical records of all personnel involved
- Obtain medical histories
- Check for pre-existing conditions, medications, MELs
- Review PHA status and any recent medical concerns
Coroner/Autopsy Coordination
Reference: Canadian Forces Health Services Group Orders 4000-09, B-MD-007-000/AF-003.
- Contact local coroner to determine arrangements for autopsy and custody/transfer of HR
- Coroner controls accident site until HR removed and site officially released to IIC
- Request approval before disturbing or moving crash fatalities (can be prearranged)
- Photograph HR in situ before removal to document state for investigation
- Be prepared to assist coroner if unfamiliar with aviation physiology/investigation requirements
- Local law enforcement can provide coroner contact information
Three elements of aviation post-mortem:
- Identification of HR: wallets, clothing, jewellery, age, sex, face, race, hair, eyes, height, weight, dentition, scars, tattoos, blood group, dog tags, etc.
- Etiology: Cause of death, pre-existing disease (causal, contributory, or incidental), possible incapacitation or error, intoxication, equipment failure, environmental factors
- Determination of Sequential Factors: Gravitational, chemical, thermal, circulatory/respiratory, ante mortem, agonal, post-mortem
Key Autopsy Coordination Points:
- Obtain permission from coroner for autopsy
- Contact qualified aviation pathologist
- Obtain X-rays and/or CT scans to indicate fracture patterns and foreign material
- Clothing photographed before removal – can assist victim identification
- Note helmet position, pressure marks, fracture lines – determine if retained on head
- Provide pathologist with all pertinent technical data surrounding accident
Life Support Equipment Investigation
Conduct in cooperation with qualified Safety System Technician and/or Aeromedical Technician.
- Determine integrity and operation of safety/life support equipment
- Ascertain whether equipment contributed to injuries sustained
- Question adequacy of equipment to fulfill its function
- Correlate equipment damage/function with injuries
- Personal breathing equipment
- Escape equipment
- Restraining devices (seat belts, harnesses)
- Protective helmet
- Seats and seat structures
- All related sub-systems
- Cabin environment
- Seats, seat structures, belt anchorages
- Belt buckles
- Cabin floor
- Cargo restraint
- Emergency exits
Handover to FSI Medical Member
The Flight Surgeon who responded to the crash will typically NOT be the one appointed to the FSI. Ensure proper handover.
- All notes, sketches, and observations made at the scene
- Photographs and recordings
- Medical histories obtained
- Toxicology sample documentation
- Coroner coordination status
- Life support equipment findings
- Your impressions and hypotheses to that point
- Correlate all information regarding the accident
- Submit report to IIC on medical and human factor aspects
- List entire relevant sequence of events (known, calculated, probable, or possible)
- Discuss with all investigation team members
- Reach mutually agreeable solution
Key Contact Information
Off-Hours Line:
1-888-WARN-DFS
(1-888-927-6337)
For toxicology coordination, POCT kit usage, specimen collection, and HR photograph control
Establish in advance:
- Civilian physicians in base area
- Hospital locations and capabilities
- Local coroners in flying area
- Pre-approval for moving remains
References: A-GA-135-002/AA-001 Occurrence Investigation Techniques, A-GA-135-003/AG-001 Airworthiness Investigation Manual, B-MD-007-000/AF-003 Flight Surgeon's Handbook, CF Health Services Group Orders 4000-09 & 7100-01.