# AD 2009-21-10 R1: Oxygen - Type: Airworthiness directive - Status: Current - Products: Airbus A300 B4-605R, A300 B4-620, A300 B4-622, A300 F4-605R, A310-203, A310-204, A310-221, A310-222, A310-304, A310-324, A318-111, A318-112 and 129 more - Effective: February 4, 2010 - Published: January 20, 2010, 75 FR 3141–3143 - Issued: January 8, 2010 - Issued as: Final rule; request for comments - Supersedes: [AD 2009-21-10](https://openairdocs.org/ad/2009-21-10) - Superseded by: Nothing supersedes this AD - Product type: Appliance - ATA chapter: 35 · Oxygen - Amendment: 39-16179 - Docket: FAA-2010-0029 (https://www.regulations.gov/docket/FAA-2010-0029) - Project: 2009-NM-262-AD - Registered aircraft: 4,271 may be affected, by airframe or engine model (OpenAirDocs) - Official PDF: https://openairdocs.org/files/sha256/9c/01/9c01e05f64f124eaac0b12344e89a32eee98894a847b47920402a144932c3e5b (from https://www.govinfo.gov/content/pkg/FR-2010-01-20/pdf/2010-937.pdf) - Federal Register: https://www.federalregister.gov/documents/2010/01/20/2010-937/airworthiness-directives-avox-systems-and-be-aerospace-oxygen-cylinder-assemblies-as-installed-on - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3D7DDB02E893EF30862576B10054B865.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/2009-21-10-R1 ## Summary The FAA is revising an existing airworthiness directive (AD), which applies to certain AVOX Systems and B/E Aerospace oxygen cylinder assemblies, as installed on various transport airplanes. That AD currently requires removing certain oxygen cylinder assemblies from the airplane. This AD removes certain oxygen cylinder part numbers from the applicability. 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 airworthiness directive ### Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: 1. The authority citation for part 39 continues to read as follows: 2. The FAA amends § 39.13 by removing amendment 39-16049 (74 FR 63063, December 2, 2009) and adding the following new AD: 2009-21-10 R1 AVOX Systems and B/E Aerospace: Amendment 39-16179. Docket No. FAA-2010-0029; Directorate Identifier 2009-NM-262-AD. ### (a) Effective Date (a) This airworthiness directive (AD) is effective February 4, 2010. ### (b) Affected ADs (b) This AD revises AD 2009-21-10, Amendment 39-16049. ### (c) Applicability (c) This AD applies to the oxygen cylinder assemblies, approved under United States Department of Transportation Regulations for Type 3HT cylinders, identified in Table 1 of this AD. These oxygen cylinder assemblies may be installed on various transport airplanes, certificated in any category, identified in but not limited to the airplanes included in Table 2 of this AD. *Table 1—Affected Oxygen Cylinder Assembly Part Numbers* | Manufacturer | Part Nos. | | --- | --- | | AVOX Systems | 6350A34 series* | | | 800112-03 | | | 800112-10 | | | 800112-13 | | | 801293-03 | | | 801307-00 | | | 801307-01 | | | 801307-02 | | | 801307-03 | | | 801307-07 | | | 801307-09 | | | 801307-23 | | | 801307-24 | | | 801365-04 | | | 801365-14 | | | 801375-00 | | | 801977-05 | | | 8915 series* | | B/E Aerospace | 176018-115 | | | 176112-115 | | | 176177-115 | | | 176181-115 | | | 176529-97 | *Table 2—Affected Airplanes* | Manufacturer | Model | | --- | --- | | Airbus | A300 B4-620, B4-622, B4-605R, and F4-605R airplanes. | | | A310-203, -204, -221, -222, -304, and -324 airplanes. | | | A318-111 and -112 airplanes. | | | A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes. | | | A320-111, -211, -212, -214, -231, -232, and -233 airplanes. | | | A321-111, -112, -131, -211, and -231 airplanes. | | | A330-301, -321, and -322 airplanes. | | | A340-211 and -212 airplanes. | | | A340-311 and -312 airplanes. | | The Boeing Company | 707-100 long body, -200, -100B long body, and -100B short body series airplanes; and 707-300, -300B, -300C, and -400 series airplanes. | | | 727, 727C, 727-100, 727-100C, 727-200, and 727-200F series airplanes. | | | 737-100, -200, -200C, -300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series airplanes. | | | 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes. | | | 757-200, -200PF, -200CB, and -300 series airplanes. | | | 767-200, -300, -300F, and -400ER series airplanes. | | | 777-200, -200LR, -300, -300ER, and 777F series airplanes. | | Gulfstream Aerospace Corporation | G-IV airplanes. | | McDonnell Douglas Corporation | DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8-51, DC-8-52, DC-8-53, and DC-8-55 airplanes. | | | DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A, C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes. | | | DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC-10), and DC-10-40 airplanes. | | | MD-10-10F and MD-10-30F airplanes. | | | MD-11 and MD-11F airplanes. | | | MD-88 airplanes. | | | MD-90-30 airplanes. | | Short Brothers PLC | SD3-30, SD3-SHERPA, and SD3-60 SHERPA airplanes. | ### (d) Subject (d) Air Transport Association (ATA) of America Code 35: Oxygen. ### (e) Unsafe Condition (e) 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. The Federal Aviation Administration is 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. ### (f) Compliance (f) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. ### (g) Inspection (g) Within 90 days after December 17, 2009 (the effective date of AD 2009-21-10), inspect to determine the serial number of the oxygen cylinder assemblies installed in the airplane. The serial number is stamped into the steel cylinder near the neck. A review of airplane records is acceptable in lieu of this inspection if the serial numbers of the oxygen cylinder assemblies can be conclusively determined from that review. For any oxygen cylinder assembly that has a serial number identified in Table 3 of this AD: Remove it from the airplane before further flight. *Table 3—Affected Oxygen Cylinder Assembly Serial Numbers* | Cylinder manufacturer | Affected Serial Nos. | | --- | --- | | AVOX Systems | ST82307 through ST82309 inclusive. | | | ST82335 through ST82378 inclusive. | | | ST82385 through ST82506 inclusive, except for S/N ST82498, which ruptured. | | | ST82550 through ST82606 inclusive. | | | ST82617 through ST82626 inclusive. | | | ST83896 through ST83905 inclusive. | | | ST84209 through ST84218 inclusive. | | | ST84224 through ST84236 inclusive. | | | ST86138. | | | ST86143. | | | ST86145. | | | ST86150. | | | ST86169. | | | ST86172. | | | ST86177. | | | ST86299 through ST86307 inclusive. | | B/E Aerospace | K495120 through K495121 inclusive. | | | K629573 through K629577 inclusive. | | | K674451 through K674455 inclusive. | ### (h) Parts Installation (h) As of December 17, 2009, no person may install, on any airplane, a United States Department of Transportation Type 3HT oxygen cylinder assembly that has a part number identified in Table 1 of this AD and a serial number identified in Table 3 of this AD. ### (i) Alternative Methods of Compliance (AMOCs) (i)(1) The Manager, Seattle Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to Attn: Nicholas Wilson, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM-150S, Seattle Aircraft Certification Office, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 917-6476; fax (425) 917-6590. Or, e-mail information to 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov. (2) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically refer to this AD. ### (j) Material Incorporated by Reference (j) None. ## Rule preamble ### Dates This AD is effective February 4, 2010. We must receive any comments on this AD by March 8, 2010. ### Addresses You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202-493-2251. • Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. ### For further information contact Nicholas Wilson, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM-150S, Seattle Aircraft Certification Office, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 917-6476; fax (425) 917-6590. ### Discussion On November 25, 2009, we issued AD 2009-21-10, amendment 39-16049 (74 FR 63063, December 2, 2009). That AD applies to certain AVOX Systems and B/E Aerospace oxygen cylinder assemblies, as installed on various transport airplanes. That AD requires removing certain oxygen cylinder assemblies from the airplane. That AD was prompted by the reported rupture of a high-pressure gaseous oxygen cylinder, which had insufficient strength characteristics due to improper heat treatment. The actions specified in that AD are intended 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. ### Actions Since AD Was Issued Since we issued AD 2009-21-10, we have been notified that its applicability (in paragraph (c)) erroneously includes oxygen cylinder assemblies having part numbers B43570-3 and B43570-5. Those oxygen cylinder assemblies are manufactured from composite material, instead of steel, and the erroneous part numbers do not correspond to any serial numbers listed in the AD. Composite oxygen tanks are not subject to the identified unsafe condition. These part numbers have been removed from Table 1 of this AD. We have also been notified that serial numbers K617383 through K617423 inclusive and K757064 through K757066 inclusive have been withdrawn from service. These serial numbers have been removed from Table 3 of this AD. ### FAA's Determination and Requirements of This AD Certain affected airplanes have been approved by the aviation authorities of other countries, and are approved for operation in the United States. The unsafe condition described previously is likely to exist or develop in other products of these same type designs. For this reason, we are issuing this AD to revise AD 2009-21-10. This new AD retains the requirements of the existing AD, but removes part numbers B43570-3 and B43570-5 from the applicability of this AD, and removes certain serial numbers from Table 3 of this AD. ### Additional Change to AD We have revised this AD to identify the legal name of certain manufacturers as published in the most recent type certificate data sheet for the affected airplane models. ### FAA's Justification and Determination of the Effective Date This AD addresses the consequences of the potential rupture of certain oxygen cylinder assemblies. Because of our requirement to promote safe flight of civil aircraft and thus the critical need to ensure the proper functioning of the oxygen cylinders and the short compliance time involved with this action, this AD must be issued immediately. Because an unsafe condition exists that requires the immediate adoption of this AD, we find that notice and opportunity for prior public comment hereon are impracticable and that good cause exists for making this amendment effective in less than 30 days. ### Comments Invited This AD is a final rule that involves requirements affecting flight safety, and we did not provide you with notice and an opportunity to provide your comments before it becomes effective. However, we invite you to send any written data, views, or arguments about this AD. Send your comments to an address listed under the ADDRESSES section. Include “Docket No. FAA-2010-0029; Directorate Identifier 2009-NM-262-AD” at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this AD. We will consider all comments received by the closing date and may amend this AD because of those comments. We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this AD. ### Authority for This Rulemaking Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency's authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, “General requirements.” Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. ### Regulatory Findings We have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that the regulation: 1. Is not a “significant regulatory action” under Executive Order 12866; 2. Is not a “significant rule” under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. See the ADDRESSES section for a location to examine the regulatory evaluation. ## Affected data sheets (16) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A28NM](https://openairdocs.org/tcds/A28NM): Airbus SAS; names 22 of 50 models: A318-111, A318-112, A319-111, A319-112, A319-113, A319-114, A319-115, A319-131… - [TCDS A6WE](https://openairdocs.org/tcds/A6WE): The Boeing Company; names 21 of 25 models: DC-9-12, DC-9-15F, MD-88, DC-9-41, DC-9-13, DC-9-34F, DC-9-81 (MD-81), DC-9-33F… - [TCDS 4A25](https://openairdocs.org/tcds/4A25): The Boeing Company; names 13 of 27 models: DC-8-41, DC-8-52, DC-8-53, DC-8-51, DC-8-11, DC-8-31, DC-8-55, DC-8-43… - [TCDS A16WE](https://openairdocs.org/tcds/A16WE): The Boeing Company; names 12 of 17 models: 737-500 Series, 737-900 Series, 737-100 Series, 737-200C Series, 737-700C Series, 737-800 Series, 737-900ER Series, 737-300 Series… - [TCDS A20WE](https://openairdocs.org/tcds/A20WE): The Boeing Company; names 12 of 14 models: 747-100B Series, 747SP Series, 747-400D Series, 747-400F Series, 747-200B Series, 747-200F Series, 747-300 Series, 747-200C Series… - [TCDS A22WE](https://openairdocs.org/tcds/A22WE): The Boeing Company; names 10 of 11 models: DC-10-40, MD-11, MD-10-30F, DC-10-10F, DC-10-30, DC-10-30F (KC-10A KDC-10), DC-10-10, MD-10-10F… - [TCDS A35EU](https://openairdocs.org/tcds/A35EU): Airbus SAS; names 10 of 17 models: A310-203, A300 F4-605R, A310-204, A310-221, A300 B4-622, A310-324, A300 B4-620, A300 B4-605R… - [TCDS A3WE](https://openairdocs.org/tcds/A3WE): The Boeing Company; names 6 of 6 models: 727-100 Series, 727 Series, 727-200 Series, 727-100C Series, 727-200F Series, 727C Series - [TCDS T00001SE](https://openairdocs.org/tcds/T00001SE): The Boeing Company; names 5 of 5 models: 777-300ER Series, 777-200 Series, 777-200LR Series, 777F Series, 777-300 Series - [TCDS 4A21](https://openairdocs.org/tcds/4A21): The Boeing Company; names 4 of 4 models: 707-100B Short Body, 707-200, 707-100 Long Body, 707-100B Long Body - [TCDS 4A26](https://openairdocs.org/tcds/4A26): The Boeing Company; names 4 of 4 models: 707-300B Series, 707-400 Series, 707-300 Series, 707-300C Series - [TCDS A1NM](https://openairdocs.org/tcds/A1NM): The Boeing Company; names 4 of 5 models: 767-300 Series, 767-200 Series, 767-400ER Series, 767-300F Series - [TCDS A2NM](https://openairdocs.org/tcds/A2NM): The Boeing Company; names 4 of 4 models: 757-200CB Series, 757-200PF Series, 757-300 Series, 757-200 Series - [TCDS A43NM](https://openairdocs.org/tcds/A43NM): Airbus SAS; names 4 of 8 models: A340-311, A340-211, A340-312, A340-212 - [TCDS A46NM](https://openairdocs.org/tcds/A46NM): Airbus SAS; names 3 of 18 models: A330-301, A330-321, A330-322 - [TCDS A12EA](https://openairdocs.org/tcds/A12EA): Gulfstream Aerospace Corporation; names 1 of 7 models: G-IV ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 4,271 (4,271 by airframe model, 0 by engine model) - Makers: Boeing 2,269, Airbus 904, Airbus Industrie 447, Gulfstream Aerospace 369, Mcdonnell Douglas 242, Douglas 13, Short Bros 12, Mcdonnell-Douglas 5, Short Brothers 5, Short Bros. & Harland 3 Models with the most aircraft: - [Gulfstream Aerospace G-IV](https://openairdocs.org/model/gulfstream-aerospace-g-iv): 357 aircraft (airframe model) - [Boeing 737-823](https://openairdocs.org/model/boeing-737-823): 278 aircraft (airframe model) - [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231): 248 aircraft (airframe model) - [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232): 188 aircraft (airframe model) - [Boeing 767-300F](https://openairdocs.org/model/boeing-767-300f): 169 aircraft (airframe model) - [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214): 160 aircraft (airframe model) - [Boeing 737-800](https://openairdocs.org/model/boeing-737-800): 139 aircraft (airframe model) - [Boeing 737-824](https://openairdocs.org/model/boeing-737-824): 135 aircraft (airframe model) - [Boeing 737-924ER](https://openairdocs.org/model/boeing-737-924er): 130 aircraft (airframe model) - [Airbus Industrie A320-232](https://openairdocs.org/model/airbus-industrie-a320-232): 109 aircraft (airframe model) - [Mcdonnell Douglas MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f): 100 aircraft (airframe model) - [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211): 100 aircraft (airframe model) - [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er): 99 aircraft (airframe model) - [Boeing 737-832](https://openairdocs.org/model/boeing-737-832): 71 aircraft (airframe model) - [Boeing 737-932ER](https://openairdocs.org/model/boeing-737-932er): 65 aircraft (airframe model) - [Boeing 757-232](https://openairdocs.org/model/boeing-757-232): 63 aircraft (airframe model) - [Boeing 737-890](https://openairdocs.org/model/boeing-737-890): 60 aircraft (airframe model) - [Airbus Industrie A319-112](https://openairdocs.org/model/airbus-industrie-a319-112): 54 aircraft (airframe model) - [Boeing 777-222](https://openairdocs.org/model/boeing-777-222): 52 aircraft (airframe model) - [Boeing 737-990ER](https://openairdocs.org/model/boeing-737-990er): 51 aircraft (airframe model) All 235 models: https://openairdocs.org/ad/2009-21-10-R1/models.md Every aircraft: https://openairdocs.org/ad/2009-21-10-R1/aircraft.md ## Related documents - [AD 2009-21-10](https://openairdocs.org/ad/2009-21-10) (historical): Oxygen · Airbus A300, Model B4-605R, A300, Model B4-620, A300, Model B4-622 and 138 more. Effective Dec 17, 2009. Replaced by this AD No proposed rule in this release led to it. Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.