AI.XIII.C.K1FAA-S-ACS-25 · Nov 2023Knowledge
Purpose for and elements of demonstration of effects of various airspeeds and configura...
Purpose for and elements of demonstration of effects of various airspeeds and configurations during engine inoperative performance.
Bottom line
VMC only addresses directional control; there is no requirement that the airplane be capable of climbing at this airspeed. Feathering the propeller of an inoperative engine minimizes propeller drag.
Key numbers
| Number | What it means |
|---|---|
| at least 0.027 VSO squared fpm at 5,000 feet MSL, for multiengine airplanes of more than 6,000 pounds maximum weight and/or VSO more than 61 knots | SE climb std |
| simply determined at 5,000 feet MSL, could be negative, for airplanes of 6,000 pounds or less maximum weight and VSO 61 knots or less | Light twin SE climb |
| altitude where climb rate is no greater than 100 fpm | Service ceiling |
FAA references
- AFH ch. 13 (pp. 13-2–13-3) — FAA-H-8083-3C
- PHAK ch. 11 (p. 11-8) — FAA-H-8083-25C (2023)
- AFH ch. 5, Coordinated Flight (p. 5-8) — FAA-H-8083-3C
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