What is the oxygen supply requirement for 10% of passengers in a non-pressurised VCA when the flight is at a pressure altitude of 12,000 ft for 1 hour and 15 minutes?

For 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. For a 1 hour 15 minute flight, the time beyond 30 minutes is 45 minutes, so oxygen must be supplied for 45 minutes.

In a non-pressurised VCA, what is the oxygen supply requirement for the pilot(s) during a flight that is at a pressure altitude of 10,000 ft for 1 hour?

For the person(s) piloting the aircraft, oxygen must be supplied for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight is at 10,000 ft, which is not above 10,000 ft, no supplemental oxygen is required.

What is the oxygen supply requirement for 100% of passengers in a non-pressurised VCA when the flight is at a pressure altitude of 13,500 ft for 10 minutes?

For 100% of passengers, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft. Therefore, oxygen must be supplied for the entire 10 minutes at 13,500 ft.

For a non-pressurised VCA, what is the oxygen supply requirement for the pilot(s) during a flight that is at a pressure altitude of 12,000 ft for 30 minutes and then at 14,000 ft for 5 minutes?

For the person(s) piloting the aircraft, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft (i.e., the 5 minutes at 14,000 ft) and for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the time at 12,000 ft is exactly 30 minutes (not exceeding 30 minutes), no oxygen is required for that segment. Therefore, oxygen must be supplied for the 5 minutes at 14,000 ft.

What is the minimum oxygen supply requirement for the pilot(s) of a non-pressurised VCA during a flight that spends 15 minutes at a pressure altitude of 12,000 ft and then climbs to 14,000 ft for 10 minutes?

For the person(s) piloting the aircraft, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft (i.e., the 10 minutes at 14,000 ft) and for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the time at 12,000 ft is only 15 minutes (not exceeding 30 minutes), no oxygen is required for that segment. Therefore, oxygen must be supplied for the 10 minutes at 14,000 ft.

For a non-pressurised VCA, what is the oxygen supply requirement for 100% of passengers during a flight that is at a pressure altitude of 13,500 ft for 25 minutes?

For 100% of passengers, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft. Therefore, oxygen must be supplied for the entire 25 minutes at 13,500 ft.

A non-pressurised VCA is operated at a pressure altitude of 10,500 ft for 40 minutes. What is the supplemental oxygen requirement for the pilot(s)?

For the person(s) piloting the aircraft, oxygen must be supplied for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is 40 minutes (exceeding 30 minutes), oxygen must be supplied for the entire 40 minutes.

What is the oxygen supply requirement for 10% of passengers in a non-pressurised VCA when the flight is at a pressure altitude of 12,000 ft for exactly 30 minutes?

For 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is exactly 30 minutes (not beyond 30 minutes), no supplemental oxygen is required for passengers.

In a non-pressurised VCA, if the flight is at a pressure altitude of 13,000 ft for 20 minutes, what is the oxygen requirement for the pilot(s)?

For the person(s) piloting the aircraft, oxygen must be supplied for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is 20 minutes (not exceeding 30 minutes), no supplemental oxygen is required for the pilot(s) at 13,000 ft.

What is the oxygen supply requirement for 100% of passengers in a non-pressurised VCA when the flight is at a pressure altitude of 13,000 ft for 1 hour?

For 100% of passengers, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft. Since 13,000 ft is not above 13,000 ft, the requirement for 100% of passengers does not apply. However, for 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft, so for a 1-hour flight, oxygen must be supplied for 30 minutes to 10% of passengers.

For a non-pressurised VCA, what is the oxygen supply requirement for the pilot(s) during a flight that is at a pressure altitude of 14,000 ft for 5 minutes and then descends to 12,000 ft for 25 minutes?

For the person(s) piloting the aircraft, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft (i.e., the 5 minutes at 14,000 ft) and for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the time at 12,000 ft is only 25 minutes (not exceeding 30 minutes), no oxygen is required for that segment. Therefore, oxygen must be supplied for the 5 minutes at 14,000 ft.

What is the minimum supplemental oxygen supply requirement for the pilot(s) in a non-pressurised VCA when flying at a pressure altitude of 12,000 ft for 45 minutes?

For the person(s) piloting the aircraft, supplemental oxygen must be supplied for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Therefore, for a 45-minute flight at 12,000 ft, oxygen must be supplied for the entire 45 minutes (since the period exceeds 30 minutes).

In a non-pressurised VCA, for how long must supplemental oxygen be provided to 100% of passengers when the aircraft is at a pressure altitude of 14,000 ft?

For 100% of passengers, supplemental oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft. Therefore, at 14,000 ft, oxygen must be supplied for the entire flying time.

A non-pressurised VCA is flying at a pressure altitude of 11,000 ft for 20 minutes. What is the supplemental oxygen requirement for the passengers?

For 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is only 20 minutes (not exceeding 30 minutes), no supplemental oxygen is required for passengers.

For a non-pressurised VCA, what is the oxygen supply requirement for 10% of passengers when the flight duration at a pressure altitude of 12,500 ft is 1 hour?

For 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. For a 1-hour flight at 12,500 ft, the time beyond 30 minutes is 30 minutes, so oxygen must be supplied for 30 minutes.

What is the oxygen supply requirement for 10% of passengers in a non-pressurised VCA when the flight is at a pressure altitude of 11,000 ft for 30 minutes?

For 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is exactly 30 minutes (not beyond 30 minutes), no supplemental oxygen is required for passengers.

In a non-pressurised VCA, what is the oxygen supply requirement for the pilot(s) during a flight that is at a pressure altitude of 13,000 ft for 31 minutes?

For the person(s) piloting the aircraft, oxygen must be supplied for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is 31 minutes (exceeding 30 minutes), oxygen must be supplied for the entire 31 minutes.

What is the oxygen supply requirement for 100% of passengers in a non-pressurised VCA when the flight is at a pressure altitude of 13,000 ft for 30 minutes?

For 100% of passengers, oxygen must be supplied for the entire flying time at pressure altitudes above 13 000 ft. Since 13,000 ft is not above 13,000 ft, the requirement for 100% of passengers does not apply. However, for 10% of passengers, oxygen must be supplied for the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft, so for a 30-minute flight, no oxygen is required for passengers.

For a non-pressurised VCA, what is the oxygen supply requirement for the pilot(s) during a flight that is at a pressure altitude of 12,000 ft for 1 hour?

For the person(s) piloting the aircraft, oxygen must be supplied for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft. Since the flight duration is 1 hour (exceeding 30 minutes), oxygen must be supplied for the entire 1 hour.

UAM.IDE.MVCA.240 Supplemental oxygen - non-pressurised aircraft

Q: Does the passenger percentage for supplemental oxygen requirements in a non-pressurised VCA include infants under 24 months of age?

Yes, passenger percentages in the table refer to passengers carried on board, including persons younger than 24 months of age.

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UAM.IDE.MVCA.240 Supplemental oxygen – non-pressurised aircraft

Regulation (EU) 2024/1111

Non-pressurised VCA operated at pressure altitudes above 10 000 ft shall be equipped with supplemental oxygen equipment capable of storing and dispensing oxygen in accordance with the following table:

Table: Minimum requirements regarding supplemental oxygen in non-pressurised aircraft

Supply for:	Flight duration and cabin pressure altitude
person(s) piloting the aircraft	For the entire flying time at pressure altitudes above 13 000 ft and for any period that exceeds 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft.
100 % of passengers (¹)	For the entire flying time at pressure altitudes above 13 000 ft.
10 % of passengers (¹)	For the entire flying time beyond 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft.

(¹) Passenger percentages in this table refer to passengers carried on board, including persons younger than 24 months of age.

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Source-Title: UAM.IDE.MVCA.240 Supplemental oxygen - non-pressurised aircraft View latest amendments

Erulesid: ERULES-1963177438-22612 Compare versions

Domain: Air operations

Applicabilitydate: 1 May, 2025

Entryintoforcedate: 12 June, 2024

Regulatorysource: Regulation (EU) 2024/1111 Navigate

Regulatorysubject: Part-IAM

Typeofcontent: IR (Implementing rule)

Origin: EASA

Category: EAR

UAM.IDE.MVCA.240 Supplemental oxygen – non-pressurised aircraft

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