CA.V.D.K2FAA-S-ACS-7B · Nov 2023Knowledge
Aerodynamics associated with lazy eights, including how to maintain coordinated flight.
Aerodynamics associated with lazy eights, including how to maintain coordinated flight.
Bottom line
A lazy eight derives its name from the manner in which the extended longitudinal axis of the aircraft is made to trace a flight pattern in the form of a figure “8” lying on its side. Coordinated flight is maintained by keeping the ball centered.
Key numbers
| Number | What it means |
|---|---|
| greater than 2 Gs — a pull-up producing this will not result in as great a gain in altitude, and in low-powered aircraft may result in a net loss of altitude | Pull-up load |
| generally near the manufacturer's design maneuvering speed | Entry speed |
FAA references
- PHAK ch. 5 (p. 5-37) — FAA-H-8083-25C (2023)
- PHAK ch. 8 (p. 8-18) — FAA-H-8083-25C (2023)
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