EASA AD BR-2022-02-02
Integrated Modular Avionics — Engine Indication and Crew Alert System Software - Update
Summary
Brazilian Airworthiness Directive AD No. 2022-02-02 issued by the Agência Nacional de Aviação Civil (ANAC) mandates a software update for the Engine Indication and Crew Alert System (EICAS) on Embraer S.A. model EMB-545 airplanes, also known as Praetor 500. This directive applies to aircraft that have incorporated Embraer Service Bulletin N. 550-00-0011 or equivalent factory modifications. The update addresses a critical issue in the takeoff configuration warning logic to enhance flight safety.
What Changed
This new directive requires the installation of EICAS Flex software version 3.3 or higher to correct an error in the takeoff configuration warning system that previously failed to provide an aural alert when the pitch trim was improperly set. The update must be performed according to Embraer Service Bulletin N. 550-42-0014 or later approved revisions. No previous directives are canceled or revised by this AD.
Why It Matters
The update is crucial because the existing software error could prevent the flight crew from receiving a warning if the pitch trim is outside the safe takeoff range, potentially leading to loss of airplane controllability. Compliance ensures improved safety by restoring reliable takeoff configuration alerts. Operators, maintenance organizations, and compliance teams must address this to maintain airworthiness and regulatory compliance.
What To Do
Operators of affected EMB-545 airplanes must install EICAS Flex software version 3.3 or higher before accumulating 1200 flight hours or within 12 months from the AD's effective date, whichever occurs first. The installation must follow the procedures in Embraer Service Bulletin N. 550-42-0014 or subsequent ANAC-approved revisions. Alternative compliance methods require approval from ANAC's Technical Manager of Continuing Airworthiness.
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