PA.IX.A — Emergency Descent

What does ACS code PA.IX.A cover?

ACS Code PA.IX.A covers "Emergency Descent" under Area of Operation IX (Emergency Operations) for the FAA Private Pilot Airplane certificate (FAA-S-ACS-6C). Candidates are tested on knowledge elements and risk management factors defined in 14 CFR regulations and FAA handbooks (PHAK / AFH).

Task Specification & Required References

• ACS Document: FAA-S-ACS-6C (Private Pilot Airplane)
• Area of Operation: Area IX — Emergency Operations
• Task: Task A — Emergency Descent
• Primary FAA Sources: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Airplane Flying Handbook (FAA-H-8083-3) / Helicopter Flying Handbook (FAA-H-8083-21), Aviation Weather Handbook (FAA-H-8083-28), 14 CFR Parts 61, 91 & 107, Aeronautical Information Manual (AIM).

Airman Certification Standards Elements

Knowledge Elements

• PA.IX.A.K1: Situations that would require an emergency descent (e.g., depressurization, smoke, or engine fire).
• PA.IX.A.K2: Immediate action items and emergency procedures.
• PA.IX.A.K3: Airspeed, including airspeed limitations.
• PA.IX.A.K4: Aircraft performance and limitations.

Risk Management Elements

• PA.IX.A.R1: Altitude, wind, terrain, obstructions, gliding distance, and available landing distance considerations.
• PA.IX.A.R2: Collision hazards.
• PA.IX.A.R3: Configuring the airplane.
• PA.IX.A.R4: Distractions, task prioritization, loss of situational awareness, or disorientation.

How do I study PA.IX.A?

1. Read each element for PA.IX.A in FAA-S-ACS-6C and note any you cannot explain in your own words.
2. Study each one in the FAA source it points to: the handbook chapter, the 14 CFR section or the AIM paragraph.
3. Practice with questions tagged PA.IX.A, and read the explanation for every miss.
4. Retest, then review the ACS codes you still miss on your practice test report.

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Related ACS tasks

• Previous task: PA.VIII.F — Radio Communications, Navigation Systems/Facilities, and Radar Services
• Next task: PA.IX.B — Emergency Approach and Landing (Simulated)
• Same area: PA.IX.B — Emergency Approach and Landing (Simulated)
• Same area: PA.IX.C — Systems and Equipment Malfunctions
• Same area: PA.IX.D — Emergency Equipment and Survival Gear
• Same area: PA.IX.E — Engine Failure During Takeoff Before VMC (Simulated)
• Same area: PA.IX.F — Engine Failure After Liftoff (Simulated)
• Same area: PA.IX.G — Approach and Landing with an Inoperative Engine (Simulated)