Airworthiness directives › 2022-12-02
AD 2022-12-02 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 all Bombardier, Inc., Model BD-100-1A10 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 14 days after the effective date of this AD, revise the Non-Normal Procedures chapter of the existing Airplane Flight Manual to include the information in the applicable temporary revision identified in paragraphs (g)(1) through (3) of this AD. (1) Bombardier Challenger 300 Temporary Revision TR-92, dated December 20, 2021, to the Bombardier Challenger 300 AFM (Imperial Version). (2) Bombardier Challenger 300 Temporary Revision TR-92, dated December 20, 2021, to the Bombardier Challenger 300 AFM (Metric Version). (3) Bombardier Challenger 350 Temporary Revision TR-23, dated December 20, 2021, to the Bombardier Challenger 350 AFM.
Unsafe condition
This AD was prompted by a report of multiple in-service events where, following a STAB TRIM FAULT advisory message and auto-pilot disconnect, flightcrew commands for a nose-up trim resulted in nose-down trim movement of the horizontal stabilizer instead. The FAA is issuing this AD to address uncommanded horizontal stabilizer motion, which could result in increased crew workload and reduced safety margins; and if the flightcrew is unable to regain control of the horizontal stabilizer, would result in loss of control of the airplane and excessive high control forces.
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