AD 2004-13-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | EMB-120 | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120 Series Airplanes |
Unsafe Condition
Possible loss of airplane control and subsequent injury to the flight crew and passengers due to the propeller synchronizer switch not being 'OFF' after engine start and before takeoff and landing.
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Required Actions
Revise the Limitations Section of the Airplane Flight Manual (AFM) to include the statement 'For takeoff and landing PROP SYNC must be OFF'. Insert pages 4-17, 4-23, and 4-27 of EMBRAER AFM 120/794, Revision 65, into the AFM.
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Compliance Time
Within 30 days from the effective date of the AD.
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Affected Aircraft
All EMBRAER Model EMB-120 series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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