Archives: Service Letter

All Service Letter

Ground Handling Precautions for Main Rotor Systems Equ i pped w i th Elas t omericdampers

Main Transmission Input Pinion Shaft PN 269A5103 and -9 – Limited Life Increased to 6000 Hours

Exchange Program – Selective Helicopter Components

New Seal Requirement for Overhaul of PN 269A3150 – 5 and -7 Landing Gear Damper Assemblies

Periodic Cleaning and Lubrication of Sealed Bearing – Upper Pulley, Lower Coupling Drive Pulley, Idler Pulley and Main Rotor Drive Shaft Thruster Bearing

12V Battery Relay PN MS24166Dl – Corrosion Protection and Relay Replacement

New Wedge Base Lamp Socket PN 2973932 for Both Instrument Cluster Assemblies

New Comfort Clips for Sam Browne Seat Belt and Shoulder Harness Assemblies

Drive System Rotating Bearings – Daily Purge with Mobil 28 Grease

Belt Drive Transmission PN 269A5559-3 Coupling Shaft – Limited Life Increase to 6000 Hours