2009-21-10: Oxygen
FAA order 2009-21-10 is an airworthiness directive in force since December 17, 2009. The FAA's subject line: Oxygen. It names Airbus A300, Airbus A319, Airbus A320, Airbus A321, Airbus A330, Airbus A340, Boeing 707, Boeing 727, Boeing 737, Boeing 747, Boeing 757, Boeing 767, Boeing 777, Douglas DC-10, Douglas DC-8, Douglas DC-9, Gulfstream G-IV Gulfstream IV, Mcdonnell Douglas Aircraft Co MD-88, Mcdonnell Douglas DC-10, Mcdonnell Douglas DC-9, Mcdonnell Douglas MD-10, Mcdonnell Douglas MD-11, Short Bros SD3, Short Brothers Plc SD3: about 7,514 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Appliance
- Makes
- Airbus; The Boeing Company; Gulfstream Aerospace Corporation; McDonnell Douglas Corporation; Short Brothers PLC
- Models
- A300, Model B4-605R, A300, Model B4-620, A300, Model B4-622, A300, Model F4-605R, A310, Model 203, A310, Model 204, A310, Model 221, A310, Model 222, A310, Model 304, A310, Model 324, A318-111, A318-112, A319-111, A319-112, A319-113, A319-114, A319-115, A319-131, A319-132, A319-133, A320-111, A320-211, A320-212, A320-214, A320-231, A320-232, A320-233, A321-111, A321-112, A321-131, A321-211, A321-231, A330-301, A330-321, A330-322, A340-211, A340-212, A340-311, A340-312, 707-100 Long Body, 707-100B Long Body, 707-100B Short Body, 707-200, 707-300 Series, 707-300B Series, 707-300C Series,...
- On this site
- Airbus A300 120 registered
Airbus A319 329 registered
Airbus A320 799 registered
Airbus A321 929 registered
Airbus A330 154 registered
Airbus A340 10 registered
Boeing 707 9 registered
Boeing 727 37 registered
Boeing 737 2,887 registered
Boeing 747 192 registered
Boeing 757 440 registered
Boeing 767 583 registered
Boeing 777 358 registered
Douglas DC-10 8 registered
Douglas DC-8 6 registered
Douglas DC-9 7 registered
Gulfstream G-IV Gulfstream IV 360 registered
Mcdonnell Douglas Aircraft Co MD-88 10 registered
Mcdonnell Douglas DC-10 17 registered
Mcdonnell Douglas DC-9 93 registered
Mcdonnell Douglas MD-10 15 registered
Mcdonnell Douglas MD-11 104 registered
Short Bros SD3 41 registered
Short Brothers Plc SD3 6 registered
Dates and paperwork
- In force since
- December 17, 2009
- Published
- December 2, 2009 (signed November 25, 2009)
- Docket
- FAA-2009-0915
- Replaced by
- 2009-21-10 R1
- Status
- Historical
- The FAA's document
- Read the order on the FAA's site
The FAA's summary their words, unchanged
We are adopting a new airworthiness directive (AD) for certain AVOX Systems and B/E Aerospace oxygen cylinder assemblies, as installed on various transport airplanes. This AD requires removing certain oxygen cylinder assemblies from the airplane. This AD was prompted by the reported rupture of a high-pressure gaseous oxygen cylinder, which had insufficient strength characteristics due to improper heat treatment. We are issuing this AD to prevent an oxygen cylinder from rupturing, which, depending on the location, could result in structural damage and rapid decompression of the airplane, damage to adjacent essential flight equipment, deprivation of the necessary oxygen supply for the flightcrew, and injury to cabin occupants or maintenance or other support personnel.
The order itself the regulatory text, as published
Show the full text (6,646 characters)
Related safety bulletins advice on the same designs, not orders
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 7, 2026. Connections as data: /graph/directive/2009-21-10.json · aircraft systems.
