AD 99-02-18 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-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
Fretting of the titanium thermal insulating blankets could result in an increased risk of fire in the engine exhaust duct of the tail pipe.
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Required Actions
Remove the thermal insulating blankets from the upper rear nacelle structure; re-position the engine exhaust duct with shims; install new stainless steel plates on applicable airplanes; replace the rear exhaust duct bracket if necessary; and ensure no installation of prohibited part numbers listed in paragraph (d).
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Compliance Time
Within 2,400 flight hours after the effective date of this AD
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Affected Aircraft
EMBRAER Model EMB-120 series airplanes, serial numbers 120003, 120004, and 120006 through 120336 inclusive
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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