Airworthiness Directive · Amendment 39-19582 · Engine exhaust
Empresa Brasileira de Aeronautica S.A. (Embraer) Airplanes
This AD applies to Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes identified in Embraer Service Bulletin 145-78-0035, Revision 03, dated November 26, 2004; certificated in any category; except airplanes identified in Embraer Service Bulletin 145-78-0035, Revision 02, dated January 31, 2003.
We are adopting a new airworthiness directive (AD) for certain Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135ER, - 135KE, -135KL, and -135LR airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes. This AD was prompted by reports of internal corrosion of the stow/transit switches installed in the engine thrust reversers. This AD requires installation of new stow/ transit switches. We are issuing this AD to address the unsafe condition on these products.
Before the accumulation of 2,000 total flight hours, or within 400 flight hours after the effective date of this AD, whichever occurs later, install new stow/transit switches having part number (P/N) 83-990-168, on the #1 and #2 engine thrust reversers, in accordance with the Accomplishment Instructions of Embraer Service Bulletin 145-78-0035, Revision 03, dated November 26, 2004.
As of the effective date of this AD, no person may install, on any airplane, a stow/transit switch having P/N 83-990-137 or P/N 83-990-152.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
