Fuselage — AFT Fuselage Fitting Not Heat Treated
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of the affected Bombardier aircraft must remove and discard the non-heat treated aft fuselage fittings and replace them with new heat treated parts. This must be done within 8800 flight hours from the effective date of October 17, 2018. Compliance should follow the procedures outlined in Bombardier Service Bulletin 670BA-53-056 or later approved revisions.
Summary
Canadian Airworthiness Directive CF-2018-25 addresses an issue with aft fuselage fittings on certain Bombardier Inc. aircraft models CL-600-2D15, CL-600-2D24, and CL-600-2E25. The directive mandates inspection and replacement of affected fittings that were not heat treated as required. This ensures the structural integrity of the aircraft fuselage and prevents potential failures.
What changed
This new Airworthiness Directive introduces a mandatory requirement to remove and replace aft fuselage fittings that were not heat treated according to specifications. It applies specifically to Bombardier CL-600-2D15, CL-600-2D24, and CL-600-2E25 aircraft with certain serial numbers. The directive requires compliance within 8800 flight hours from the effective date.
Why it matters
The directive is critical for aviation professionals because the affected fittings have significantly reduced mechanical properties, increasing the risk of undetected cracks and possible structural failure. Operators, maintenance organizations, and compliance teams must address this to maintain airworthiness and safety. Failure to comply could lead to unsafe aircraft conditions and regulatory violations.
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