Airworthiness Directive · Amendment 39-11315 · Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120RT and -120ER Series Airplanes
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120RT and -120ER Series Airplanes
Model EMB-120RT and -120ER series airplanes, equipped with BFGoodrich brake assemblies having part number (P/N) 2-1585 or 2-1479-1; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-120RT and -120ER series airplanes, that requires repetitive detailed visual inspections to detect discrepancies of the brake assemblies on the main landing gear (MLG), and replacement of the brake assemblies with new or serviceable brake assemblies, if necessary. This amendment is prompted by reports of fatigue cracking or splitting of the brake stator disk at the thermal expansion slots. The actions specified by this AD are intended to prevent failure of the brake assemblies of the MLG due to cracking or splitting of the stator disk, which could result in loss of brake effectiveness and could cause the airplane to leave the runway surface.
