Superseded by ANAC BRAZIL AD 2025-04-02
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must revise Section 4 of the AFM within 10 days from the AD's effective date by replacing existing procedures for AVIONICS MAU 1A and MAU 3B failures with the new procedures provided. The AD may be incorporated by inserting a copy into the AFM. Any alternative compliance methods require approval from ANAC's Continuing Airworthiness Technical Branch.
Summary
Brazilian Airworthiness Directive 2024-08-01 is issued by the Agência Nacional de Aviação Civil (ANAC) and applies to all Embraer S.A. ERJ 190-300 and ERJ 190-400 aircraft, regardless of serial number. The directive addresses a critical failure in the MAU 3B and MAU 1A avionics units that can lead to loss of normal braking during landing, posing a safety risk. It mandates revisions to the Aircraft Flight Manual (AFM) procedures to mitigate this risk.
What changed
This directive introduces mandatory modifications to the AFM abnormal and emergency procedures related to AVIONICS MAU 1A FAILURE and MAU 3B FAILURE messages. It specifies updated landing performance factors and speeds for various runway and weather conditions to ensure safe aircraft operation despite the brake system anomalies. The AD is an interim measure pending possible further actions by ANAC.
Why it matters
This AD is critical for aviation professionals because it addresses a safety hazard that could lead to runway excursions due to undetected brake failures. Operators and maintenance teams must update flight manuals and pilot procedures to ensure correct handling of brake failure warnings. Compliance reduces the risk of accidents and ensures regulatory adherence for Embraer ERJ 190 series aircraft in Brazil.
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