Airworthiness Directive · Amendment 39-12617 · Raytheon Model Beech 400, 400A, and 400T Series Airplanes; Model Beech MU-300-10 Airplanes; and Model Mitsubishi MU-300 Airplanes
Raytheon Model Beech 400, 400A, and 400T Series Airplanes; Model Beech MU-300-10 Airplanes; and Model Mitsubishi MU-300 Airplanes
The following airplanes, certificated in any category: Table 1.--Applicability Model Serial Numbers Beech 400 series airplanes.............. RJ-1 through RJ-65 inclusive. Beech 400A series airplanes............. RK-1 and subsequent. Beech 400T series airplanes............. TT-1 through TT-180 inclusive. Beech 400T-1 airplanes.................. TX-1 through TX-11 inclusive. Beech MU-300-10 airplanes............... A1001SA through A1011SA inclusive. Mitsubishi MU-300 airplanes............. A003SA through A091SA inclusive.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Raytheon Model Beech 400, 400A, and 400T series airplanes; Model Beech MU-300-10 airplanes; and Model Mitsubishi MU-300 airplanes. This action requires repetitive inspections to detect cracking in the radius of the cutout of the aft flange of the left engine forward carry-through mount bracket, and replacement with a new bracket and fitting if necessary. This action is necessary to prevent failure of the engine mount and possible loss of the engine, and consequent loss of control of the airplane. This action is intended to address the identified unsafe condition.
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.
