Manufacturer
Bombardier
Number
FAA 2023-02-01
Model(s)
Challenger 300/350
Published Date
Effective Date
Summary
Requires verifying serial numbers of certain pitch trim switches and replacement of affected pitch trim switches with new ones in the pilot and copilot control wheels. This AD would prohibits installation of affected parts. Prompted by an investigation that indicated that one of the springs in the pitch trim switch of the horizontal stabilizer had failed. The failure of the spring could result in the airplane pitching nose down when actually commanded nose up.
UUID
463