Pneumatic: New software for Pneumatic System Controller (PSC)
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of EMBRAER EMB-545 and EMB-550 airplanes should update the PSC software and reidentify the controller following EMBRAER Service Bulletin No. 550-36-0007, revision 02, dated June 28, 2024. Although not mandatory, this action is recommended to avoid dual bleed failure and cabin depressurization. EMBRAER should continue fleet monitoring to verify ongoing airworthiness assumptions.
Summary
BEA 2024-04 is a Special Airworthiness Bulletin addressing a software update for the Pneumatic System Controller (PSC) on EMBRAER S.A. EMB-545 and EMB-550 airplanes. The bulletin informs about a potential dual bleed failure and cabin depressurization issue related to the PSC software. It provides guidance to prevent this failure without imposing mandatory requirements.
What changed
BEA 2024-04 introduces a new software version for the Pneumatic System Controller with Part Numbers MM-00150-12-41 or MM-00150-14-41 to prevent dual bleed failure scenarios. The update includes reidentification of the PSC and follows the procedures outlined in EMBRAER Service Bulletin No. 550-36-0007, revision 02. This is an informative bulletin rather than a mandatory directive.
Why it matters
This bulletin is important for aviation professionals because it highlights a safety concern that could lead to emergency descent due to cabin depressurization. Operators and maintenance teams need to be aware of the software update to maintain aircraft safety and prevent operational disruptions. Monitoring the fleet ensures that certification assumptions remain valid based on in-service experience.
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