AD 88-16-51 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer - Empresa Brasileira de Aeronautica S.A. | EMB-120 | Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA S.A. (EMBRAER) Model EMB-120 Series Airplanes |
| aircraft | Embraer - Empresa Brasileira de Aeronautica S.A. | EMB-120RT | Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA S.A. (EMBRAER) Model EMB-120 Series Airplanes |
Unsafe Condition
An overspeed occurrence could lead to insufficient authority of mechanical and electrical auxiliary feather systems to feather the propeller when Np exceeds 120 percent, resulting in adverse aircraft handling qualities and potential loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Insert specified limitations and emergency procedures into the FAA-approved AFM, alert flight crews, and consider alternate compliance methods approved by the FAA Manager. Actions include setting power levers to FLT IDLE, feathering the affected engine, adjusting flaps and airspeed as per tables, and following shutdown procedures if feathered prior to landing.
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Compliance Time
within 24 hours after the effective date of this AD
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Affected Aircraft
All Model EMB-120 series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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