Archives: Service bulletins

All Service bulletins

Inspection – Tail Rotor Driveshaft Damper Bearing Block P/N 269A5722 and 269A5722-3

Inspection – Tail Rotor Fork Bolts P/N 269A6235

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

Field Replacement – Auxiliary Fuel Boost Pump

Engine Lower Coupling Driveshaft P/N 269A5504-3 or Engine Lower Coupling Driveshaft P/N 269A5504-5 or 269A5504-1

Blade Weight Installation – P/N 269B1145 Series Main Rotor Blades

Inspection Main Rotor Swashplate Scissor Link Assemblies P/N 269A1335 and 269A1336

Retirement – Bellcrank Assembly, Lateral Pitch Mixer Idler P/N 269A7506

Control Cover – Bonding, Upper and Lower

Inspection – Tail Rotor Transmission Assembly P/N 269A6027 or 369A5400 Addendum dated – 10/27/1969.