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PLT409: Flight Time Limitations and Rest

What code PLT409 covers, why the FAA tests it, and how to study Flight Time Limitations and Rest before your checkride.

Updated September 2026 · Learning statement code · Pilot / Instructor

Official FAA learning statement

Recall regulations - flight / duty time

What this means for your checkride

Part 121 limits how much a flight crewmember may fly and requires scheduled rest. In domestic operations, a crewmember's total flight time in all commercial flying may not exceed 1,000 hours in any calendar year, 100 hours in any calendar month, 30 hours in any 7 consecutive days, or 8 hours between required rest periods. The certificate holder may not schedule, and the crewmember may not accept, an assignment that would exceed these limits.

Crewmembers must know the flight time ceilings that protect against fatigue in air carrier operations.

The common trap

The limits apply to a crewmember's total flying in all commercial flying, not just to time flown for one employer.

Where to study it

FAA source
14 CFR Part 121, 14 CFR 121.471, Flight time limitations and rest requirements
Read 14 CFR Part 121 on Aviator IQ →
Before your checkride (14 CFR 61.39)

A code on your test report is an area of deficiency. An authorized instructor must review it with you and endorse that review before you take the practical test, and the examiner may revisit it during the oral. Study it until you can explain it out loud, not just recognize the answer.