Airman Certification Standards
ACS AA.IV.B
Recovery from Unusual Flight Attitudes
Knowledge
Procedures for recovery from unusual flight attitudes.
Unusual flight attitude causal factors, including physiological factors, system and equipment failures, and environmental factors.
The operating envelope and structural limitations for the aircraft.
Effects of engine location, wing design, and other specific design characteristics that could affect aircraft control during the recovery.
Risk Management
Situations that could lead to loss of control in-flight (LOC-I) or unusual attitudes in-flight (e.g., stress, task saturation, inadequate instrument scan distractions, and spatial disorientation).
Operating envelope considerations.
Interpreting flight instruments.
Assessment of the unusual attitude.
Control input errors, inducing undesired aircraft attitudes.
Control application solely by reference to instruments.
Collision hazards.
Distractions, task prioritization, loss of situational awareness, or disorientation.
Skill
Use proper instrument cross-check and interpretation to identify an unusual attitude (including both nose-high and nose-low) in flight, and apply the appropriate flight control, power input, and aircraft configuration in the correct sequence, to return to a stabilized level flight attitude.
Retrieved from ecfr.gov on July 17, 2026.