AD 2006-12-10 R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
Unsafe Condition
Failure of the oxygen cylinder support under the most critical flight load conditions due to improper heat-treatment, which could cause the oxygen cylinder to come loose and leak oxygen.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support. Perform corrective action if necessary, including installation of properly heat-treated supports as specified in Boeing Special Attention Service Bulletin 747-35-2114.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-400 series airplanes identified in Boeing Special Attention Service Bulletin 747-35-2114, including additional airplanes added in Revision 1 dated June 7, 2007.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Crew oxygen cylinder
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - 2006-12-10 R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2006-12-10 R1 Document Type: AD Final Rules Docket Number: FAA-2008-0410 Subject Heading: Airworthiness Directives; Boeing Model 747-400 Series Airplanes Subject: Crew oxygen cylinder Status: Current Citation: Federal Register: April 22, 2008 Citation Publish Date: 04/22/2008 Effective Date: 05/07/2008 Make: The Boeing Company Model: 747-400 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: 2006-12-10 Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 6 1 [Federal Register: April 22, 2008 (Volume 73, Number 78)] [Rules and Regulations] [Page 21526-21528] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr22ap08-4] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2008-0410; Directorate Identifier 2007-NM-362-AD; Amendment 39-15485; AD 2006-12-10 R1] RIN 2120-AA64 Airworthiness Directives; Boeing Model 747-400 Series Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. –––––––––––––––––––––––––––––––––– SUMMARY: The FAA is revising an existing airworthiness directive (AD) that applies to certain Boeing Model 747-400 series airplanes. That AD currently requires inspecting the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support, and performing corrective action if necessary. This new AD retains all the requirements of the existing AD and expands the applicability of the existing AD to include certain airplanes that are not on the U.S. Register. This AD results from a report indicating that certain oxygen cylinder supports may not have been properly heat-treated. We are issuing this AD to prevent failure of the oxygen cylinder support under the most critical flight load conditions, which could cause the oxygen cylinder to come loose and leak oxygen. Leakage of oxygen could result in oxygen being unavailable for the flightcrew or could result in a fire hazard in the vicinity of the leakage. DATES: Effective May 7, 2008. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of May 7, 2008. On July 17, 2006 (71 FR 33604, June 12, 2006), the Director of the Federal Register approved the incorporation by reference of Boeing Special Attention Service Bulletin 747-35-2114, dated December 19, 2002. We must receive comments on this AD by June 23, 2008. 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. 2 • 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 service information identified in this AD, contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Robert Hettman, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 917-6457; fax (425) 917- 6590. SUPPLEMENTARY INFORMATION: Discussion On May 31, 2006, we issued AD 2006-12-10, amendment 39-14635 (71 FR 33604, June 12, 2006), for certain Boeing Model 747-400 series airplanes (i.e., those identified in Boeing Special Attention Service Bulletin 747-35-2114, dated December 19, 2002). That AD requires inspecting the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support, and performing corrective action if necessary. That AD resulted from a report indicating that certain oxygen cylinder supports may not have been properly heat-treated. We issued that AD to prevent failure of the oxygen cylinder support under the most critical flight load conditions, which could cause the oxygen cylinder to come loose and leak oxygen. Leakage of oxygen could result in oxygen being unavailable for the flightcrew or could result in a fire hazard in the vicinity of the leakage. Actions Since Existing AD Was Issued Since we issued AD 2006-12-10, Boeing issued Special Attention Service Bulletin 747-35-2114, Revision 1, dated June 7, 2007, to add airplanes to the effectivity of the service bulletin. With the exception of the added airplanes, the actions specified in Revision 1 are the same as those specified in Boeing Special Attention Service Bulletin 747-35-2114, dated December 19, 2002 (referenced as a source of service and applicability information in AD 2006-12-10). FAA's Determination and Requirements of This AD The unsafe condition described previously is likely to exist or develop on other airplanes of the same type design. For this reason, we are issuing this AD to revise AD 2006-12-10. This new AD retains the requirements of the existing AD. This AD also adds new airplanes to the applicability.
Document Text
Show stored source text (verify against official source)
AD Final Rules - 2006-12-10 R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2006-12-10 R1 Document Type: AD Final Rules Docket Number: FAA-2008-0410 Subject Heading: Airworthiness Directives; Boeing Model 747-400 Series Airplanes Subject: Crew oxygen cylinder Status: Current Citation: Federal Register: April 22, 2008 Citation Publish Date: 04/22/2008 Effective Date: 05/07/2008 Make: The Boeing Company Model: 747-400 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: 2006-12-10 Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 6 1 [Federal Register: April 22, 2008 (Volume 73, Number 78)] [Rules and Regulations] [Page 21526-21528] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr22ap08-4] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2008-0410; Directorate Identifier 2007-NM-362-AD; Amendment 39-15485; AD 2006-12-10 R1] RIN 2120-AA64 Airworthiness Directives; Boeing Model 747-400 Series Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule; request for comments. –––––––––––––––––––––––––––––––––– SUMMARY: The FAA is revising an existing airworthiness directive (AD) that applies to certain Boeing Model 747-400 series airplanes. That AD currently requires inspecting the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support, and performing corrective action if necessary. This new AD retains all the requirements of the existing AD and expands the applicability of the existing AD to include certain airplanes that are not on the U.S. Register. This AD results from a report indicating that certain oxygen cylinder supports may not have been properly heat-treated. We are issuing this AD to prevent failure of the oxygen cylinder support under the most critical flight load conditions, which could cause the oxygen cylinder to come loose and leak oxygen. Leakage of oxygen could result in oxygen being unavailable for the flightcrew or could result in a fire hazard in the vicinity of the leakage. DATES: Effective May 7, 2008. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of May 7, 2008. On July 17, 2006 (71 FR 33604, June 12, 2006), the Director of the Federal Register approved the incorporation by reference of Boeing Special Attention Service Bulletin 747-35-2114, dated December 19, 2002. We must receive comments on this AD by June 23, 2008. 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. 2 • 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 service information identified in this AD, contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Robert Hettman, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 917-6457; fax (425) 917- 6590. SUPPLEMENTARY INFORMATION: Discussion On May 31, 2006, we issued AD 2006-12-10, amendment 39-14635 (71 FR 33604, June 12, 2006), for certain Boeing Model 747-400 series airplanes (i.e., those identified in Boeing Special Attention Service Bulletin 747-35-2114, dated December 19, 2002). That AD requires inspecting the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support, and performing corrective action if necessary. That AD resulted from a report indicating that certain oxygen cylinder supports may not have been properly heat-treated. We issued that AD to prevent failure of the oxygen cylinder support under the most critical flight load conditions, which could cause the oxygen cylinder to come loose and leak oxygen. Leakage of oxygen could result in oxygen being unavailable for the flightcrew or could result in a fire hazard in the vicinity of the leakage. Actions Since Existing AD Was Issued Since we issued AD 2006-12-10, Boeing issued Special Attention Service Bulletin 747-35-2114, Revision 1, dated June 7, 2007, to add airplanes to the effectivity of the service bulletin. With the exception of the added airplanes, the actions specified in Revision 1 are the same as those specified in Boeing Special Attention Service Bulletin 747-35-2114, dated December 19, 2002 (referenced as a source of service and applicability information in AD 2006-12-10). FAA's Determination and Requirements of This AD The unsafe condition described previously is likely to exist or develop on other airplanes of the same type design. For this reason, we are issuing this AD to revise AD 2006-12-10. This new AD retains the requirements of the existing AD. This AD also adds new airplanes to the applicability.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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