Inspection and Retirement, Main Rotor Thrust Bearing, P/N 269A5050-50 and -51 Inspection, Field Modification – Main Rotor Mast, Thrust Bearing Nut and Spacer Tube
Engine Lower Coupling Driveshaft P/N 269A5504-3 or Engine Lower Coupling Driveshaft P/N 269A5504-5 or 269A5504-1