Airworthiness directives › 2023-20-10
AD 2023-20-10 Airworthiness Directives; Bombardier, Inc., Airplanes
Models named: BD-700-2A12. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bombardier, Inc., Model BD-700-2A12 airplanes, certificated in any category, serial numbers 70006 through 70129 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 36 months after the effective date of this AD, replace the left and right MFS No. 1, MFS No. 2, and MFS No. 3 anti-rotation plate part number (P/N) G05770140-103 and P/N G05770160-101 with P/N G05770140-105, including inspecting the MFS anti-rotation plates for any cracking and the hinge bolts for any evidence of rotation, in accordance with Part 2.B. of the Accomplishment Instructions of Bombardier Service Bulletin 700-27-7504, Revision 01, dated July 11, 2022. If any cracking or evidence of rotation is found, before further flight, repair using a method approved in accordance with the procedures specified in paragraph (i)(1) of this AD. (2) Before further flight after accomplishing the actions specified in paragraph (g)(1) of this AD: Perform a functional test (stop-to- stop check) of the MFS control-surfaces in accordance with Step 2.C. (3) of the Accomplishment Instructions of Bombardier Service Bulletin 700-27-7504, Revision 01, dated July 11, 2022.
Unsafe condition
This AD was prompted by a report that some of the multi-function spoiler (MFS) anti-rotation plates failed in-service due to a thin wall design. The FAA is issuing this AD to address MFS anti-rotation plate failures. The unsafe condition, if not addressed, could result in wear and failure of the inboard and outboard spoiler hinge pins, possibly resulting in a hinge no longer supporting the load, or unintended asymmetrical spoiler deployment, leading to reduced controllability of the airplane, or loss of control of the airplane.
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