EASA AD CF-2024-19
Flight Controls — Pitch-up on Landing When Using Thrust Reversers in Partial Flap Configurations
Summary
Canadian Airworthiness Directive CF-2024-19 addresses a pitch-up issue on landing when using thrust reversers in partial flap configurations for Bombardier Inc. aircraft models CL-600-1A11, CL-600-2A12, and CL-600-2B16. The directive mandates revisions to the Aircraft Flight Manual (AFM) procedures to mitigate the risk of tail strikes during landing. This AD applies to specific serial number ranges of these Challenger series aircraft.
What Changed
CF-2024-19 introduces mandatory amendments to the normal, emergency, and abnormal procedures sections of the AFM for affected Bombardier Challenger aircraft. These revisions strengthen guidance on applying adequate nose-down elevator input after touchdown when thrust reversers are deployed in partial flap configurations. The changes aim to prevent pitch-up tendencies that have led to tail strikes in service.
Why It Matters
This directive is critical for flight crews and operators to reduce the risk of tail strikes during landing, which can cause structural damage and safety hazards. Maintenance and compliance teams must ensure that AFM revisions are incorporated and that flight crews are trained on the updated procedures. Adhering to this AD supports continued airworthiness and regulatory compliance for affected Bombardier Challenger aircraft.
What To Do
Operators of affected Bombardier CL-600-1A11, CL-600-2A12, and CL-600-2B16 aircraft must revise their AFMs by incorporating the specified procedure updates approved by Transport Canada. Flight crews should be advised of these changes and operate the aircraft accordingly. Compliance with these actions is required within 60 days from the effective date of 2024-06-13.