AD 2019-03-30
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | Various | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (Embraer) Airplanes |
Unsafe Condition
There have been found cases of internal corrosion of the stow/transit switches installed in the engine thrust reversers of EMB-145 aircraft models. One case of severely contaminated transit switch resulted in uncommanded engine rollback to idle in flight. Spurious messages ``ENG ( ) REV DISAGREE'' have also been displayed in the [Engine Indicating and Crew Alerting System] EICAS, due to the above internal corrosion, which have induced aborted takeoffs.
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Required Actions
This AD requires installation of new stow/transit switches having part number 83-990-168 on both engines.
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Compliance Time
Before further flight
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Affected Aircraft
Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135 airplanes and Model EMB-145, 145ER, -145MR, -145LR, -145XR, -145MP, and 145EP airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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