Instruments - Honeywell Primus EPIC Software - Installation
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Embraer ERJ 170 aircraft must install the required Honeywell Primus EPIC software updates within 48 months from the effective date of 21 October 2019. They should follow the specified Embraer service bulletins for installation and record compliance in maintenance logs. Alternative compliance methods require prior approval from ANAC's certification branch.
Summary
Brazilian Airworthiness Directive AD No. 2019-10-02 issued by the Agência Nacional de Aviação Civil (ANAC) mandates updates to the Honeywell Primus EPIC software installed on Embraer S.A. ERJ 170 series aircraft. This directive applies to all serial numbers of ERJ 170-100 and ERJ 170-200 variants equipped with specific versions of the Primus EPIC software. The directive addresses unsafe conditions related to erroneous engine parameter indications and autopilot anomalies during flight.
What changed
This new directive requires operators to update the Honeywell Primus EPIC software to versions 25.8, 27.2, or 27.3 or higher depending on the current software version and autopilot configuration. It discontinues the use of software versions up to 25.7, version 27.1, and version 27.2 for aircraft with Autoland function. The directive also provides detailed compliance instructions and references specific Embraer service bulletins for software installation.
Why it matters
The directive addresses critical safety issues including incorrect engine data displays and uncommanded autopilot pitch changes that could affect takeoff and landing phases. Compliance ensures flight safety by preventing potential misinterpretations by flight crews and autopilot malfunctions. Operators, maintenance organizations, and compliance teams must update software to maintain airworthiness and regulatory compliance.
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