Airworthiness Directive · Amendment 39-18002 · Oxygen
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model BD-700-1A11 airplanes, certificated in any category, modified by FAA Supplemental Type Certificate (STC) ST02140NY, issued October 14, 2005 (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/6B8CF26D01F5E6DE862570C7006DCD7E?OpenDocument&Highlight= st02140ny); and to airplanes, certificated in any category, modified by FAA STC ST02033NY, issued December 2, 2004 (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/99FF781E0BD20AD886256FA300558250?OpenDocument&Highlight=02033).
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-700-1A11 airplanes. This AD was prompted by a report that certain lanyards for the passenger oxygen masks are longer than the specified length, possibly leading to inactive oxygen masks in an emergency. This AD requires replacement of certain oxygen mask lanyards. We are issuing this AD to detect and correct lanyards of incorrect length, which might not activate the flow of oxygen in an emergency, resulting in injury to passengers.
Within 750 flight hours or 15 months after the effective date of this AD, whichever occurs first: Replace lanyards having part numbers (P/N) B431564-503 and -505 for all passenger oxygen dispensing units, with lanyards having P/N B431564-507, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 700-1A11-35-009, Revision 02, dated May 28, 2013.
