Airworthiness DirectiveEASA AD BR-2011-02-01R1

Main Landing Gear Retraction Actuators - Inspection / Replacement

Published: Oct 12, 2022
Effective: Oct 14, 2022
Deadline: Mar 14, 2011
Replaces: 2011-02-01

Embraer ERJ 190 100 STD 100 LR 100 IGW

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What to do

Operators must perform a one-time inspection or maintenance record review within 30 days after February 12, 2011, to identify affected actuator part numbers. For actuators with part number 190-70980-403, general visual inspections must be conducted at specified flight cycle intervals, with component replacements required if discrepancies are found. Full actuator replacement with improved parts must occur before 12,000 flight cycles, and modifications must be completed at the next MLG overhaul to terminate AD requirements.

Summary

Brazilian Airworthiness Directive AD No. 2011-02-01R1 is a regulatory document issued by the Agência Nacional de Aviação Civil (ANAC) that applies to Embraer ERJ 190 series airplanes, including models 190-100 STD, LR, IGW, ECJ, SR, and 190-200 STD, LR, IGW. The directive mandates inspection and replacement procedures for the main landing gear (MLG) retraction actuators to address potential damage and failure risks. It specifies inspection intervals, component replacements, and actuator upgrades to ensure continued airworthiness and safety.

What changed

This AD revises and supersedes the previous AD No. 2011-02-01 by including additional service documents for compliance and expanding the scope of required inspections and replacements. It introduces updated inspection intervals, replacement part numbers, and modification procedures for the MLG retraction actuators to mitigate the risk of actuator rod-end damage and potential landing gear collapse.

Why it matters

The directive is critical for aviation professionals because failure of the MLG retraction actuator rod can lead to unsafe landing gear extension without hydraulic damping, risking gear collapse during operations. Operators and maintenance organizations must comply to prevent structural damage and ensure flight safety. Compliance also avoids regulatory penalties and supports continued airworthiness of affected Embraer ERJ 190 aircraft.

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