Airman Certification Standards
ACS AI.XII.A
Emergency Descent
Knowledge
Purpose of and procedures for emergency descent.
Situations that would require an emergency descent (e.g., depressurization, smoke, or engine fire).
Immediate action items and emergency procedures.
Aircraft performance and limitations.
Airspeed, including airspeed limitations.
Common errors related to this Task.
Risk Management
Altitude, wind, terrain, obstructions, gliding distance, and available landing distance considerations.
Collision hazards.
Configuring the airplane.
Distractions, task prioritization, loss of situational awareness, or disorientation.
Skill
Clear the area.
Establish and maintain the appropriate airspeed and configuration appropriate to the scenario specified by the evaluator and as covered in Pilot's Operating Handbook (POH)/Airplane Flight Manual (AFM) for the emergency descent.
Maintain orientation, divide attention appropriately, and plan and execute a smooth recovery.
Use bank angle between 30° and 45° to maintain positive load factors during the descent.
Maintain appropriate airspeed +0/-10 knots, and level off at a specified altitude ±100 feet.
Complete the appropriate checklist(s).
Analyze and correct common errors related to this Task.
Retrieved from ecfr.gov on July 17, 2026.