AA.I.D.R3FAA-S-ACS-11A · Nov 2023Risk management
High altitude slow-downs and excursions behind the power curve.
High altitude slow-downs and excursions behind the power curve.
Bottom line
In the region of reversed command, a decrease in airspeed must be accompanied by an increased power setting in order to maintain steady flight. As the IAS decreases with altitude, it approaches the airspeed for the low-speed buffet boundary where pre-stall buffet occurs for the airplane at a load factor of 1.0 G.
FAA references
- AC 61-138, para. 17.1.1.2 — AC No: 61-138A
- PHAK ch. 11 (p. 11-11) — FAA-H-8083-25C (2023)
- AC 61-107, para. 3-2 — AC No: 61-107B
- AC 61-107, para. 1-4 — AC No: 61-107B
- AC 120-111 Appendix 1 — AC No: 120-111
- AFH ch. 5, Slow Flight (p. 5-10) — FAA-H-8083-3C
- AFH ch. 16 (p. 16-6) — FAA-H-8083-3C
Build understanding you can use
Unlock the full lesson and continue studying this element.
- Full teaching sections: Hazard; How it shows up; Decision rules; Mitigations; The hazard
- Check your understanding with answers you can reveal