AD 97-05-02
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-120ER | 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
Binding of the aileron due to water freezing between the upper channel fairings and the surface of the leading edge of the aileron.
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Required Actions
Remove the upper channel fairings and their shims; rework the riveting holes, the aileron sealing canvas (aerodynamic seals), and the protective covers of the trim tab hinge fittings of the aileron and elevator in accordance with EMBRAER Service Bulletin 120-57-0021, Change 1 or Change 2. Additionally, prohibit installation of specific aileron sealing canvas part numbers unless reworked per the service bulletin.
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Compliance Time
Within 3,000 hours time-in-service after the effective date of this AD
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Affected Aircraft
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120 series airplanes as listed in EMBRAER Service Bulletin No. 120-57-0021, Change 2, dated March 8, 1996.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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