AD 2021-12-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer S.A. | Various | Airworthiness Directives; Yaborã Indústria Aeronáutica S.A. (Type Certificate Previously Held by Embraer S.A.) Airplanes |
| aircraft | Embraer | S | Airworthiness Directives; Yaborã Indústria Aeronáutica S.A. (Type Certificate Previously Held by Embraer S.A.) Airplanes |
Unsafe Condition
The smoke detection system of the forward and aft electrical bays erroneously indicated the presence of smoke via the respective EICAS messages when complete loss of the electrical DC essential bus 2 was induced.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revising the existing AFM procedures associated with messages of smoke in the electronic bays presented on the respective EICAS, and modifying the electrical wiring of the mid-electronic bay and backup smoke detectors as specified in ANAC AD 2021-02-01.
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Compliance Time
Before further flight
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Affected Aircraft
All Yaborã Indústria Aeronáutica Model ERJ 190-300 and ERJ 190-400 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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