Airworthiness Directive · Amendment 39-16743 · Oxygen
B/E Aerospace, Continuous Flow Passenger Oxygen Mask Assembly, Part Numbers 174006-( ), 174080-( ), 174085-( ), 174095-( ), 174097-( ), and 174098-( )
This AD applies to B/E Aerospace, Continuous Flow Passenger Oxygen Mask Assembly; Part Numbers 174006-(), 174080-(), 174085-(), 174095-(), 174097-(), and 174098-() as listed in B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010, that are installed on any aircraft except for those Boeing airplanes specified in the ADs referenced in paragraphs (b)(1), (b)(2), (b)(3), (b)(4), and (b)(5) of this AD.
Note 1: The service bulletin lists the part numbers with a suffix of “XX.” The TSO Index lists the part numbers with the suffix of “().” For the purposes of this AD, we have used “().”
We are adopting a new airworthiness directive (AD) for the products listed above, except for those that are currently affected by similar action through any of five ADs applicable to Boeing products. This AD requires an inspection/records check to determine the manufacturer and part number of the oxygen mask assemblies installed, an inspection to determine the manufacturing date and modification status if certain oxygen mask assemblies are installed, and corrective action for certain oxygen mask assemblies. This AD was prompted by a report that several oxygen mask assemblies with broken in-line flow indicators were found following a mask deployment. We are issuing this AD to prevent the in-line flow indicators of the oxygen mask assembly from fracturing and separating, which could inhibit oxygen flow to the masks. This condition could consequently result in occupants developing hypoxia following a depressurization event.
Comply with this AD within the compliance times specified, unless already done.
Within 36 months after August 19, 2011 (the effective date of this AD) or within 6,500 hours time-in-service (TIS) after August 19, 2011 (the effective date of this AD), whichever occurs first, do the following:
(1) Do a records check to determine if any oxygen mask assembly part number listed in B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010, is installed in the aircraft.
(i) If you cannot positively determine the manufacturer and part number of any oxygen mask assembly installed, do a general visual inspection to determine if any oxygen mask assembly part number listed in B/E Aerospace Service Bulletin 174080-35-04, Rev. 000, dated September 6, 2010, is installed in the aircraft.
(ii) If you can positively determine that no oxygen mask assembly part number listed in B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010, is installed, no further action is required by this AD.
(iii) If you can positively determine that any Airbus airplane affected by this AD is in compliance with European Aviation Safety Agency (EASA) AD 2010-0165, dated August 5, 2010, or EASA AD 2010-0165R1, correction dated January 31, 2011, and that no oxygen mask assembly part number listed in B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010 is installed by STC or alteration, no further action is required by this AD.
(iv) If you can positively determine through inspection of the oxygen mask container assembly that the date of manufacture is after March 1, 2006, and you can verify that the original oxygen masks in the container assembly are installed, no further action is required by this AD.
(2) If, as a result of any of the records checks/inspections required in paragraph (g)(1) of this AD, you determine that an oxygen mask assembly part number listed in B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010, is installed, inspect the oxygen mask assembly to determine if the in-line flow indicator must be replaced following paragraph II.A. of B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010. If you can positively determine that the in-line flow indicator does not require replacement, no further action is required by this AD.
After the inspection in paragraph (g)(2) of this AD and it was determined the in-line flow indicator must be replaced, within 36 months after August 19, 2011 (the effective date of this AD) or within 6,500 hours TIS after August 19, 2011 (the effective date of this AD), whichever occurs first, modify the oxygen mask assembly by replacing the in-line flow indicator following B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010. As an alternative to modifying the oxygen mask assembly, you may replace the oxygen mask assembly with an airworthy oxygen mask assembly FAA-approved for installation on the aircraft.
(i) As of August 19, 2011 (the effective date of this AD), do not install a B/E Aerospace oxygen mask having a part number listed in B/E Aerospace Service Bulletin 174080-35-04, Rev 000, dated September 6, 2010, with a manufacturing date on or after January 1, 2002, and before March 1, 2006, on any aircraft, unless it has been modified following the requirements of paragraph (h) of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Appliances and equipment
