Airworthiness DirectiveEASA AD BR-2023-02-01R3

Flight Controls - Aileron Autopilot Servo Mount Clutch Retaining Bolt - Replacement

Published: Oct 25, 2024
Effective: Oct 25, 2024
Deadline: Oct 25, 2024
Replaces: 2023-02-01R2

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of Embraer EMB-505 airplanes must replace the aileron autopilot servo mount clutch retaining bolt and washer within the specified intervals based on flight hours and time since new, as detailed in the directive's compliance table. Repetitive replacements are required every 36 months after the initial replacement. Alternatively, a terminating action involving replacement of additional aileron servo assembly parts can be performed following Embraer Service Bulletin N. 505-22-0006. Compliance must be recorded in maintenance logs, and any alternative methods of compliance require ANAC approval.

Summary

Brazilian Airworthiness Directive AD No. 2023-02-01R3 is a regulatory document issued by the Agência Nacional de Aviação Civil (ANAC) that applies to all Embraer S.A. EMB-505 model airplanes. It mandates the replacement of the aileron autopilot servo mount clutch retaining bolt and washer to address corrosion issues that could impair aileron control and affect flight safety. The directive includes detailed compliance intervals and part numbers for replacement components.

What changed

This revision cancels and supersedes AD No. 2023-02-01R2 and revises the applicability and compliance requirements. It updates the compliance intervals and part numbers for the replacement of the clutch retaining bolt and washer. Additionally, it introduces a terminating action involving replacement of multiple parts of the aileron servo assembly as described in Embraer Service Bulletin N. 505-22-0006.

Why it matters

The directive addresses a critical safety concern involving corrosion of the clutch retaining bolt in the aileron autopilot servo mount, which can cause control jamming and compromise airplane controllability. Compliance ensures continued airworthiness and safe operation of the Embraer EMB-505 fleet. Operators, maintenance organizations, and compliance teams must adhere to the specified replacement schedules to mitigate risk and avoid regulatory penalties.

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