Airworthiness directives › 2023-02-01
AD 2023-02-01 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, all serial numbers, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 200 flight hours or 6 months, whichever occurs first, from the effective date of this AD, review the airplane (technical) records for the horizontal stabilizer pitch trim switches and control wheels to determine the date of replacement, if any, of the pilot or co-pilot trim switch and control wheels. (1) If the pilot or co-pilot pitch trim switch or control wheels were removed after January 1, 2019, and the replacement pitch trim switches have serial numbers 02000 and subsequent, then no further action is required other than compliance with paragraph (j) of this AD. (2) For airplanes with serial numbers (S/Ns) 20003 through 20780 inclusive: If no pilot or co-pilot pitch trim switch or control wheel was replaced after January 1, 2019, then no further action is required other than compliance with paragraph (j) of this AD. (3) For airplanes with S/Ns 20901 through 20936 inclusive: If no pilot or co-pilot pitch trim switch or control wheel has been replaced on an airplane, then no further action is required other than compliance with paragraph (j) of this AD.
Unsafe condition
This AD was prompted by the investigation that one of the springs in the pitch trim switch for the horizontal stabilizer had failed. The FAA is issuing this AD to address the failure of the springs in the pitch trim switch. The unsafe condition, if not corrected, could result in the airplane pitching nose down when actually commanded nose up, and the flightcrew may not be able to regain control of the horizontal stabilizer, resulting in reduced controllability of the airplane and 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