AD 2004-23-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | EMB-135 and -45 | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes |
Unsafe Condition
Incorrect wiring of electrical connectors to the pressure switches and cartridges on the fire extinguisher bottles for the engines and the auxiliary power unit (APU), which could result in the issuance of erroneous commands or the receipt of erroneous information, potentially leading to the inability to put out a fire in an engine or in the APU.
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Required Actions
Inspect the wiring of electrical connectors to the pressure switches and cartridges on the fire extinguisher bottles for the engines and APU. Adjust the length of the harnesses to the fire extinguisher bottles. Install a color-coded identification system to avoid misconnections during maintenance. Perform a functional test of the engine fire extinguisher system.
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Compliance Time
Within 100 flight hours after the effective date of this AD for airplanes added to the applicability of this AD.
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Affected Aircraft
EMBRAER Model EMB-135 and -145 series airplanes, as listed in EMBRAER Service Bulletin 145-26-0010, Change 03, dated August 28, 2002; certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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