PILOT ARCADE ALL MISSIONS

AEROMEDICAL / MISSION 12

Oxygen Requirements Trainer

CABIN ALTITUDE · EXPOSURE TIME · WHO NEEDS OXYGEN

OXYGEN CHALLENGE

Make the oxygen call

CABIN-PRESSURE ALTITUDE

Where is the cabin?

10,500 FT
17,500
15,000
14,000
12,500
10,000

PART 91 LEGAL REQUIREMENTS

APPLIESREQUIRED ABOVE 15,000ALL OCCUPANTS PROVIDED OXYGEN
APPLIESREQUIRED ABOVE 14,000CREW USES OXYGEN ENTIRE TIME
APPLIESREQUIRED ABOVE 12,500 THROUGH 14,000CREW USES AFTER 30 MIN
APPLIESRECOMMENDED FAA SAFETY GUIDANCEDAY > 10,000 / NIGHT > 5,000
CABIN ALTITUDE10,500 FT CONDITIONDAY VFR TIME AT ALTITUDE60 MIN PEOPLE ABOARDPILOT + 1

Use cabin-pressure altitude—not height above the ground.

EXPLORE MODE

Build a flight scenario

1. CABIN ALTITUDE
10,00017,500
2. TIME AT ALTITUDE
3. FLIGHT CONDITION
REQUIRED FLIGHT CREWNOT REQUIRED

OTHER OCCUPANTSNOT REQUIRED

FAA SAFETY GUIDANCEOXYGEN RECOMMENDED

QUICK BRIEF

Legal minimums and safer choices

14 CFR 91.211(A)
01Above 12,500

Through 14,000 feet, required flight crew use oxygen only after more than 30 minutes at those cabin altitudes.

02Above 14,000

Required flight crew must be provided with and use oxygen during the entire time at those cabin altitudes.

03Above 15,000

Every occupant must be provided oxygen. The rule does not say that passengers must use it.

04FAA recommendation

For optimum protection, pilots are encouraged to use oxygen above 10,000 feet by day and above 5,000 feet at night.

DECISION FLOWCabin altitude → exposure time → crew use → occupant availability → safety recommendation.

TRAINING SCOPE: U.S. civil operations under 14 CFR 91.211(a). Part 121, Part 135, pressurized-aircraft provisions, operating limitations, and individual medical considerations may impose different or additional requirements. Verify current regulations and follow your aircraft procedures.

14 CFR 91.211FAA AIM: Effects of Altitude

FREE PILOT OXYGEN REQUIREMENTS PRACTICE

Know when supplemental oxygen is required

Practice the U.S. Part 91 supplemental-oxygen rules using cabin-pressure altitude, exposure time, and the people aboard. The trainer clearly separates legal requirements from the FAA’s more conservative safety recommendation.

Required crew

Above 12,500 through 14,000 feet, required crew must use oxygen after more than 30 minutes. Above 14,000 feet, they must use it continuously.

Other occupants

Above 15,000 feet, each occupant must be provided supplemental oxygen, although §91.211(a) does not require passengers to use it.

Safety recommendation

FAA guidance encourages oxygen above 10,000 feet during the day and above 5,000 feet at night for optimum protection.