AA.I.B.K5FAA-S-ACS-11A · Nov 2023Knowledge
Adverse effects of exceeding an airplane limitation or the aircraft operating envelope.
Adverse effects of exceeding an airplane limitation or the aircraft operating envelope.
Bottom line
Exceeding VMO may cause aerodynamic flutter and G-load limitations to become critical during dive recovery. Structural design integrity is not predictable at velocities greater than VMO. Any excursion past MMO, whether intentional or accidental, may cause induced flow separation of boundary layer air over the ailerons and elevators of an airplane and result in a loss of control surface authority and/or control surface buzz or snatch.
Key numbers
| Number | What it means |
|---|---|
| 100 ft/min rate of climb maintainable | Service ceiling |
FAA references
- AC 61-107, para. 1-4 — AC No: 61-107B
- AC 61-107, para. 3-3 — AC No: 61-107B
- AC 91-74, para. 7-4 — AC No: 91-74A
- AC 61-138, para. 14.1.3.2 — AC No: 61-138A
- AC 20-117, para. 4g — AC No: 20-117
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