AD 2004-19-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | EMB-135 and EMB-145 | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and EMB-145 Series Airplanes |
Unsafe Condition
Incorrect operation of the precooler differential pressure switches could result in inappropriate automatic shutoff of the engine bleed valve, leading to inability to restart a failed engine using cross-bleed or possible failure of the anti-ice system.
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Required Actions
Inspect and ensure disconnection and insulation of the electrical connectors of certain precooler differential pressure switches located in the left and right pylons. Revise the airplane flight manual (AFM) to include procedures for restarting an engine in flight using the auxiliary power unit.
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Compliance Time
Within 14 days for AFM revisions; within 100 flight hours for the inspection.
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Affected Aircraft
EMBRAER Model EMB-135 and EMB-145 series airplanes, including additional serial numbers not covered by AD 2000-13-02.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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