Airworthiness Directive · Amendment 39-21413 · Fire protection
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model BD-100-1A10 airplanes, certificated in any category, serial numbers 20003 through 20500 inclusive, and 20501 through 20669 inclusive, fitted with fire detection and extinguishing (FIREX) control unit part number (P/N) 474112-2.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was prompted by reports of failure of a certain fire detection and extinguishing (FIREX) control unit. This AD requires replacing FIREX control units having a certain part number. The FAA is issuing this AD to address the unsafe condition on these products.
Within 24 months after the effective date of this AD: Replace any FIREX control unit having P/N 474112-2 with a unit having P/N 474112-3, in accordance with paragraphs 2.B.(1) and (3) of the Accomplishment Instructions of the applicable Bombardier service bulletin specified in paragraphs (g)(1) and (2) of this AD.
(1) For airplanes having serial numbers 20003 through 20500 inclusive: Bombardier Service Bulletin 100-26-01, Revision 01, dated December 5, 2019.
(2) For airplanes having serial numbers 20501 through 20669 inclusive: Bombardier Service Bulletin 350-26-001, Revision 01, dated December 5, 2019.
