Archives: Service Letter

All Service Letter

Replacement – Internal Seal, Fuel Drain Valve

Lycoming Service Letter No . L157A (dated), 9 Dec 66; Engine Mounted Full-flow Oil Filter

Retirement of Certain Engine and Rotor Tachometer Cables

Retrofit – Clutch Spring Attachment Strap

Salvage Parts – 269 Series Helicopters

Service Life Cutoff Limit

Service Life Cutoff Limit

Special Inspection of Main Rotor Transmission Magnetic Plug

Specified Fuels Used in 269 Series Helicopters

STRUCTURAL ENHANCEMENT OF TAIL ROTOR PEDAL MOUNT