Ice and Rain Protection — Insufficient Engine Core Ventilation Resulting in Higher Engine Core Temperatures
- Published
- Effective
- Deadline
- Replaces
- 2019-31
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must install IASC software version 5.0 or later approved versions on affected BD-500-1A11 aircraft within 850 flight hours or 6 months from 20 September 2019, whichever occurs first. Installation must follow Bombardier Service Bulletin BD500-219001 instructions or Transport Canada-approved modifications. Compliance with these requirements is mandatory to continue legal flight operations.
Summary
Airworthiness Directive CF-2019-31R1 addresses insufficient engine core ventilation leading to higher engine core temperatures on Airbus Canada Limited Partnership model BD-500-1A11 aircraft. This directive updates previous requirements to prevent nuisance Engine Fire Warning messages that could cause unnecessary engine shutdowns. It applies specifically to certain serial-numbered BD-500-1A11 aeroplanes.
What changed
This revision of Airworthiness Directive CF-2019-31 allows the installation of later versions of the Integrated Air Systems Controller (IASC) software beyond version 5.0, provided they meet Transport Canada approval and installation requirements. It supersedes the original AD CF-2019-31 issued in September 2019, which mandated only IASC software version 5.0 installation.
Why it matters
This directive is critical for operators and maintenance teams to prevent false engine fire warnings that could lead to unnecessary engine shutdowns and potential unsafe conditions. Compliance ensures improved engine core temperature management and reduces operational disruptions. It also provides flexibility in software updates while maintaining safety standards.
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New ADs and bulletins for Airbus BD-500 (A220 Series) and Canada BD-500-1A11, summarized like this page, every Monday.