Airman Certification Standards
ACS AI.II.O
High Altitude Operations - Pressurization
This reproduces published FAA reference text for study. It does not replace the current official FAA publication or regulation.
Knowledge
K1
Fundamental concepts of aircraft pressurization system, including failure modes.
K2
Physiological factors, including:
K2a
a. Impairment
K2b
b. Symptoms of hypoxia 21
K2c
c. Time of useful consciousness (TUC)
K2d
d. Effects of rapid decompression on crew and passengers
Risk Management
R1
High altitude flight.
R2
Malfunction of pressurization system, if equipment is installed.
Skill
S1
Operate the pressurization system, if equipment is installed.
S2
Respond appropriately to simulated pressurization malfunctions, if equipment is installed.
Retrieved from ecfr.gov on July 17, 2026.