# Commission Regulation (EU) No 965/2012 of 5 October 2012 laying down technical requirements and administrative procedures related to air operations pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council, Division CAT.IDE.A.240: Supplemental oxygen — non-pressurised aeroplanes

Extent: E+W+S+N.I.

Non-pressurised aeroplanes operated at pressure altitudes above 10 000 ft shall be equipped with supplemental oxygen equipment capable of storing and dispensing the oxygen supplies in accordance with Table 1.
Table 1
Oxygen minimum requirements for non-pressurised aeroplanes
Passenger numbers in Table 1 refer to passengers actually carried on board, including persons younger than 24 months.
Supply for
Duration and cabin pressure altitude
1.
Occupants of flight crew compartment seats on flight crew compartment duty and crew members assisting flight crew in their duties
The entire flying time at pressure altitudes above 10 000 ft.
2.
Required cabin crew members
The entire flying time at pressure altitudes above 13 000 ft and for any period exceeding 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft.
3.
Additional crew members and 100 % of passengers
The entire flying time at pressure altitudes above 13 000 ft.
4.
10 % of passengers
The entire flying time after 30 minutes at pressure altitudes above 10 000 ft but not exceeding 13 000 ft.

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Source: https://www.legislation.gov.uk/eur/2012/965/annex/IV/division/subpart+d/division/section+1/division/catidea240 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-965/annex-IV/division-subpart+d/division-section+1/division-catidea240
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.