Archives: Service bulletins

All Service bulletins

Improved Methods for Checking Idle Mixture and Idle Speed. Operational Check of Fuel System.

Inspection and Sealing of Main Rotor Blade Elastomeric Dampers

Installation of Main Rotor Blade Elastomeric Damper Assemblies P/N 269A1290-1

Installation of PN 269A5593-3 H-Frame with PN 269A5050-78 Bearings

One-Time Inspection of Belt Drive Upper Pulley Assembly

United Instruments, Inc. Altimeters (SZR Part No. 369H4505)

Identification and possible Replacement of Collective Pitch Mixer Bellcrank

One-time Inspection of Main Rotor Driveshaft P/N 269A5304-5

Periodic Inspection of Engine Lower Coupling Driveshaft Boot P/N 269A5473

One-time Inspection of Bolt Holes at Tail Rotor Transmission Attachment Area