Archives: Service Letter

All Service Letter

INTRODUCTION OF NEW 269A5175-39 MAIN ROTOR TRANSMISSION ASSEMBLY

Retirement of Certain Engine and Rotor Tachometer Cables

MODIFICATION KIT FOR 269D/330 START/GENERATOR ELECTRICAL SYSTEM

MODIFICATION OF AIRCRAFT PARTS CORPORATION STARTER/GENERATOR

NEW DESIGN MAIN ROTOR DRIVE SHAFT THRUST BEARING

NEW SPLINED MAIN ROTOR HUB AND DRIVE SHAFT DESIGN WITH INCREASED TIME LIFE

ORIENTATION OF MAIN ROTOR TRANSMISSION BACKLASH SHIM

EXCHANGE PROGRAM FOR CEF INDUSTRIES 8618M33 N2 TRIM ACTUATOR

STRUCTURAL ENHANCEMENT OF TAIL ROTOR PEDAL MOUNT

SUBJECT: MAIN ROTOR TRANSMISSION OIL SEAL COLLAR USAGE AND EFFECTIVITY