Archives: Service Letter

All Service Letter

Retirement of Certain Engine and Rotor Tachometer Cables

SUBJECT: MAIN ROTOR TRANSMISSION OIL SEAL COLLAR USAGE AND EFFECTIVITY

NEW DESIGN MAIN ROTOR DRIVE SHAFT THRUST BEARING

STRUCTURAL ENHANCEMENT OF TAIL ROTOR PEDAL MOUNT

NEW DESIGN – TAIL ROTOR DRIVE SHAFT

MODIFICATION OF AIRCRAFT PARTS CORPORATION STARTER/GENERATOR

New Electric Driven Airframe Fuel Pump

New Retirement Life for 269A51053-51 Input Pinion and 269A5194 Carrier Assembly Installed in Model 269C-l Helicopters

New SA-269K-101 Fuel System Vent Kits

300CB Engine Time Between Overhaul Extension