Airworthiness Directive · Amendment 39-12845 · Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes
Superseded. A later AD replaced this one: AD 2004-23-09. Comply with the one in force.
Model EMB-135 and -145 series airplanes, certificated in any category; having the serial numbers listed in the table below; and those airplanes on which the auxiliary power unit (APU) cowling has been replaced between January 1, 2002, and the effective date of this AD: Table.--Airplane Serial Numbers 145003 145149 145292 145311 145005 145151 145295 145318 145009 145159 145296 145323 145011 145238 145298 145562 through 145572 inclusive. 145110 145267 145302 145574 through 145585 inclusive. 145123 145269 145303 145587 145125 145274 145307 145588 145131 145281 145309
This amendment adopts a new airworthiness directive (AD) that is applicable to certain EMBRAER Model EMB-135 and -145 series airplanes. This action requires determining whether a defective auxiliary power unit (APU) exhaust silencer is installed on the airplane; and corrective actions, if necessary. This action is necessary to prevent separation of the aft baffle assembly from the APU exhaust silencer and consequent separation of the assembly from the airplane, which could cause damage to other airplanes during takeoff and landing operations, or injury to people on the ground. This action is intended to address the identified unsafe condition.
