Airworthiness Directive · Amendment 39-18450 · Oxygen
The Boeing Company Airplanes
This AD applies to Boeing Model 747-8 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 747-35-2132, dated June 8, 2015.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-8 series airplanes. This AD requires an inspection to determine if all oxygen components in the passenger oxygen system are installed, installation of new o-rings, and corrective actions if necessary. This AD was prompted by a report that oxygen tube couplings in the passenger oxygen system could be missing or incorrectly installed. We are issuing this AD to detect and correct oxygen leaks from oxygen tube couplings in the passenger oxygen system, which could result in depletion of emergency oxygen at a faster rate than expected, reduce the passengers' and crews' protection from hypoxia at elevated cabin altitudes, and increase the risk of a fire.
Within 72 months after the effective date of this AD: Do a general visual inspection to determine if all oxygen components are installed; and do all applicable corrective actions; in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 747-35-2132, dated June 8, 2015. Do all applicable corrective actions before further flight.
Submit a report of the findings (both positive and negative) of the inspection required by paragraph (g) of this AD to the Manager, Seattle Aircraft Certification Office (ACO), at the applicable time specified in paragraph (h)(1) or (h)(2) of this AD. The report must include the inspection results, a description of the condition found, and the airplane serial number.
(1) If the inspection was done on or after the effective date of this AD: Submit the report within 30 days after the inspection.
(2) If the inspection was done before the effective date of this AD: Submit the report within 30 days after the effective date of this AD.
A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave. SW., Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.
