Navigation - Primary Flight Displays - Software Installation
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must update the Honeywell Primus EPIC software to the specified versions within 18 months from the effective date of 25 May 2022. They should use the approved Embraer service bulletins for installation and record compliance in maintenance logs. Alternative methods of compliance may be requested from ANAC's Continuing Airworthiness Technical Branch if necessary.
Summary
Brazilian Airworthiness Directive 2022-05-03 is an official regulatory document issued by the Agência Nacional de Aviação Civil (ANAC) that applies to Embraer S.A. ERJ 170 series airplanes equipped with Honeywell Primus EPIC software versions up to 25.8 or versions 27.1 through 27.3. The directive mandates software updates to address safety concerns related to the primary flight displays. It ensures continued airworthiness and safe operation of affected aircraft registered in Brazil.
What changed
This directive introduces a mandatory update to the Honeywell Primus EPIC software installed on specified Embraer ERJ 170 aircraft models. It requires operators to install software version 27.4 or higher for aircraft currently running versions 27.1 through 27.3, and version 25.9 or higher (excluding 27.1 through 27.3) for those with versions up to 25.8. The directive also discontinues the use of older software versions due to identified unsafe conditions.
Why it matters
The update addresses a critical safety issue involving uncommanded barometric reference settings on primary flight displays, which could lead to erroneous pilot indications and increased workload during critical flight phases. Compliance is essential to maintain flight safety and regulatory conformity. Operators, maintenance organizations, and compliance teams must ensure timely software upgrades to avoid operational restrictions and potential safety risks.
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New ADs and bulletins for Embraer ERJ 170, summarized like this page, every Monday.