Airworthiness directives › 2021-03-10
AD 2021-03-10 Airworthiness Directives; Bombardier, Inc., Airplanes
Models named: BD-100-1A10. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
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.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
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.
Unsafe condition
This AD was prompted by reports of failure of a certain FIREX control unit. The FAA is issuing this AD to address failure of a FIREX control unit, which could result in the loss of the ability to detect a fire.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1