8.8 OXYGEN REQUIREMENTS

Study Notes

The commander holds the final decision for performing ferry flights.
Malfunctions and their potential effects must be assessed before a ferry flight.
Reporting of ferry flights with impaired airworthiness to CAA RM is mandatory within 10 days, including specific information such as aircraft details, departure and destination aerodromes, nature of malfunctions, and measures taken.
All related records must be retained for two years, available for CAA RM inspection.

Positioning flights are arranged to position aircraft at an aerodrome for subsequent commercial operations.
These flights must adhere to the standard procedures outlined in the Operations Manual.

Supplemental oxygen is necessary for aircraft operating above 10,000 ft, specifically when maintaining cabin pressure is below that altitude.

Each flight crew member must have an oxygen mask within immediate reach, preferably quick-donning type above 25,000 ft.
Sufficient oxygen for the entire flight duration is required when cabin altitude exceeds 13,000 ft, and a minimum of 2 hours supply for flights above 25,000 ft.
Oxygen supplies must account for the cabin pressure altitude and descent profiles.

Above 25,000 ft: A dispensing unit with oxygen supply per person, including 10% extra units distributed evenly.
When cabin pressure altitude exceeds 15,000 ft, a supply for all onboard for the entire flight or 10 minutes, whichever is greater.
Additional supplies are required for varying passenger numbers at altitudes between 10,000 ft and 15,000 ft, tailored to specific conditions.
For aircraft certified above 25,000 ft, an undiluted first aid oxygen supply is necessary for a portion of additional crew members.

First aid oxygen is meant for persons requiring undiluted oxygen post supplemental oxygen exhaustion.
Portable first aid oxygen must be sufficient for 2% of onboard persons following depressurization between 8,000 ft and 15,000 ft. Further details are found in the Operations Manual Part B and Part E Section 5.