Electrical Power — Protective Film Cover on Secondary Power Distribution Assemblies (SPDA) not Removed
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Bombardier BD-700-2A12 aircraft must inspect SPDA units 1 and 2 within 24 months of the directive's effective date and remove any protective film found, following Bombardier Service Bulletin 700-24-7508 revision 01 or later approved revisions. Aircraft that have already complied with the initial version of the service bulletin before the directive's effective date are considered compliant.
Summary
The Electrical Power — Protective Film Cover on Secondary Power Distribution Assemblies (SPDA) not Removed, Canadian Airworthiness Directive CF-2025-40, applies to Bombardier BD-700-2A12 aircraft with serial numbers 70055 to 70129, 70133, and 70135. This directive addresses the issue of a protective red film potentially left on SPDA units 1 and 2, which can impair cooling and lead to overheating and failure of the electrical power modules. The directive mandates inspection and removal of the protective film to ensure safe aircraft operation.
What changed
This new Canadian Airworthiness Directive CF-2025-40 requires mandatory inspection and removal of the protective film on SPDA units 1 and 2 for the specified Bombardier BD-700-2A12 aircraft. Previously, this action was planned as a fleet monitoring campaign without a formal directive, but it was determined that mandatory compliance was necessary to address the safety risk effectively.
Why it matters
For aviation professionals, this directive is critical because failure to remove the protective film can cause overheating and potential failure of the secondary power distribution modules, risking loss of electrical systems. Operators and maintenance teams must ensure compliance to maintain aircraft safety and avoid in-service failures that could compromise flight operations.
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