March 16, 2023
There is a history of T53 PT Bearing Heat Shields failing, departing the engine and damaging the aircraft. This repair connects the loose assembly fit for P/N 1-140-182-01 Heat Shield. Air Technology Engines has received FAA approval to address this problem to eliminate the potential of a heat shield vibratory failure and possible aircraft damage. Please review the attached instructions and advice if you have any questions.
This will improve engine reliability and safety.
John Moore
Mike Turner
Air Technology Engines, Inc.