Flight Controls — Incorrect Airplane Flight Manual (AFM) Approach Speed Adder and Landing Distance Factors for SLAT FAIL (Caution) Crew-Alerting System (CAS) Message Non-Normal Procedure
- Published
- Effective
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What to do
Operators must amend the applicable Transport Canada approved AFM by incorporating the specified chapters and supplements within 30 days of the directive's effective date. Flight crews must be informed of the changes and operate the aircraft according to the revised procedures. The updated AFM revisions are listed by publication number and date in the directive and must be used accordingly.
Summary
Airworthiness Directive CF-2025-53 is issued by Transport Canada and applies to Bombardier Inc. model BD-700-1A10 and BD-700-1A11 aircraft, including Global Express, Global Express XRS, Global 6000, Global 5000, and related variants. This directive addresses incorrect approach speed adders and landing distance factors in the Airplane Flight Manual (AFM) related to the SLAT FAIL (Caution) Crew-Alerting System (CAS) message non-normal procedure. The directive mandates updates to the AFM to ensure safe flight operations.
What changed
The directive requires correction of the approach speed adders and landing distance factors in the AFM tables for the SLAT FAIL (Caution) non-normal procedure. It introduces revised AFM chapters and supplements approved by Transport Canada that amend the affected procedures and performance data. These changes correct errors that could reduce maneuvering margins and affect stall warning activation.
Why it matters
This correction is critical for maintaining the safety margins assumed during aircraft certification, preventing unexpected stall warnings and stick shaker activation. Operators and flight crews benefit from accurate performance data, which reduces flight crew workload and enhances operational safety. Compliance ensures adherence to regulatory standards and avoids potential safety risks during approach and landing phases.
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