By Renzo, CPL · March 6, 2026
Pilot Fatigue Rules: EASA vs FAA Comparison 2026
Understanding the Rules That Keep You Safe
Fatigue is the number one human factors threat in aviation. Both the FAA and EASA have comprehensive fatigue management regulations, but they differ in structure and specifics. Every pilot must understand these rules deeply.
FAA Part 117: Flight Duty Period Limits
Maximum Flight Duty Period (FDP)
| Report Time (Local) | 1-2 Segments | 3 Segments | 4 Segments | 5 Segments | 6 Segments | 7+ Segments |
|---|---|---|---|---|---|---|
| 0000-0459 | 9 hrs | 9 hrs | 9 hrs | 9 hrs | 9 hrs | 9 hrs |
| 0500-0559 | 10 hrs | 10 hrs | 10 hrs | 10 hrs | 9.5 hrs | 9 hrs |
| 0600-0659 | 12 hrs | 12 hrs | 11.5 hrs | 11 hrs | 10.5 hrs | 10 hrs |
| 0700-1159 | 13 hrs | 13 hrs | 12.5 hrs | 12 hrs | 11.5 hrs | 11 hrs |
| 1200-1259 | 12 hrs | 12 hrs | 11.5 hrs | 11 hrs | 10.5 hrs | 10 hrs |
| 1300-1659 | 12 hrs | 12 hrs | 11.5 hrs | 11 hrs | 10.5 hrs | 10 hrs |
| 1700-2159 | 12 hrs | 12 hrs | 11 hrs | 10 hrs | 9.5 hrs | 9 hrs |
| 2200-2359 | 11 hrs | 11 hrs | 10 hrs | 10 hrs | 9.5 hrs | 9 hrs |
FAA Rest Requirements
| Requirement | Minimum |
|---|---|
| Rest before FDP | 10 consecutive hours |
| Opportunity for sleep | 8 uninterrupted hours |
| Weekly rest | 30 consecutive hours free from duty (in 168-hour period) |
| Flight time limits | 100 hours in 672 consecutive hours (28 days) |
| Annual flight limit | 1,000 hours in 365 consecutive days |
FAA Augmented Crew Operations
With additional crew members, FDP can be extended:
| Augmented Crew | Class 1 Rest (bunk) | Class 2 Rest (seat + curtain) | Class 3 Rest (seat only) |
|---|---|---|---|
| 3 pilots | 17 hrs | 16 hrs | 15 hrs |
| 4 pilots | 19 hrs | 18 hrs | 17.5 hrs |
EASA FTL (Flight Time Limitations)
Maximum FDP
| Acclimatized Start Time | 1-2 Sectors | 3 Sectors | 4 Sectors | 5 Sectors | 6+ Sectors |
|---|---|---|---|---|---|
| 0600-0629 | 13 hrs | 12.5 hrs | 12 hrs | 11.5 hrs | 11 hrs |
| 0630-0659 | 13 hrs | 12.5 hrs | 12 hrs | 11.5 hrs | 11 hrs |
| 0700-1329 | 13 hrs | 12.5 hrs | 12 hrs | 11.5 hrs | 11 hrs |
| 1330-1359 | 12.75 hrs | 12.25 hrs | 11.75 hrs | 11.25 hrs | 10.75 hrs |
| 1400-1429 | 12.5 hrs | 12 hrs | 11.5 hrs | 11 hrs | 10.5 hrs |
| After 1430 | Progressively reduced |
EASA Rest Requirements
| Requirement | Minimum |
|---|---|
| Minimum rest period | 12 hours or length of preceding duty, whichever is greater |
| Minimum sleep opportunity | 8 hours |
| Weekly rest | 36 consecutive hours (including 2 local nights) |
| Annual flight limit | 900 hours |
| 28-day flight limit | 100 hours |
Key Differences
| Rule | FAA (Part 117) | EASA (ORO.FTL) |
|---|---|---|
| Maximum FDP (basic) | 9-13 hours | 11-13 hours |
| Minimum rest | 10 hours | 12 hours (or duty length) |
| Weekly rest | 30 hours | 36 hours (with 2 local nights) |
| Annual flight limit | 1,000 hours | 900 hours |
| Fatigue call protection | Yes (cannot be penalized) | Yes (just culture requirement) |
| FRMS option | Yes (airline-specific) | Yes (airline-specific) |
| Split duty | Limited provisions | Specific split duty rules |
| Commander discretion | 30-minute extension | Limited extension provisions |
Fatigue Risk Management Systems (FRMS)
Both FAA and EASA encourage airlines to implement FRMS beyond prescriptive limits:
FRMS Components
- Science-based scheduling -- Using bio-mathematical fatigue models to predict risk
- Fatigue reporting -- Confidential system for pilots to report fatigue events
- Data analysis -- Monitoring schedules, reports, and safety data for fatigue trends
- Continuous improvement -- Adjusting schedules based on data and reports
The Fatigue Call
Both systems protect pilots who call in fatigued:
FAA: A pilot may not accept an assignment if they are too fatigued to safely perform duties. The airline may not take action against the pilot.
EASA: Under "just culture" provisions, pilots reporting fatigue are protected from punitive action.
In practice: Fatigue calls are still stigmatized at some airlines. Know your rights and exercise them when safety is at stake.
Practical Fatigue Management for Pilots
Sleep Strategies
| Strategy | When to Use | Effectiveness |
|---|---|---|
| Strategic napping | Before early reports | Very high |
| Controlled rest (cockpit nap) | Long cruise segments | High (airline SOP required) |
| Caffeine timing | 30 min before needed alertness | Moderate (temporary) |
| Light exposure | Early morning operations | High for circadian adaptation |
| Sleep banking | Days before demanding trips | Moderate |
Red Flags for Fatigue
- Difficulty maintaining altitude or heading
- Delayed reactions to ATC instructions
- Forgetting items from checklists
- Irritability or poor communication
- Microsleeps (nodding off for seconds)
If you experience these symptoms, you are already impaired. Communicate with your crew and consider a fatigue call or controlled rest procedure.
The Bottom Line
Fatigue rules exist because tired pilots make mistakes that kill people. Know your regulatory limits, understand the differences between FAA and EASA rules, and always exercise your right to declare fatigue when safety is at risk. No trip, no schedule, and no pressure from management is worth compromising safety.
*Test your knowledge of human factors and fatigue with our [ATPL question bank](/tools/quiz), covering human performance and all 13 exam subjects.*
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