Archives: Service bulletins

All Service bulletins

Conversion of 12V to 24V Electrical System – Modification Kit No. M10068 and Installation of 24V, 100 Ampere Capacity Alternator – Kit No. 269A4929-1

One-time Inspection and Rework of P/N 269A4262 Inertia Reel Shoulder Harness Assemblies and Installation

Installation – P/N 269A5192 Pinion Aft Bearing Oil Strainer Assembly in Main Transmission Assemblies Built Prior to 1969

One-time Inspection of main Rotor Hubs and Shafts; P/N 269A5305 and -9

Bungee Installation Kit P/N M10123 – Collective Pitch Stick

Periodic Check and Initial Replacement – Belt Drive Pulley H-Frame Tie Bar Bracket Assembly, PN 269A5517-7

Inspection and Overhaul of Fuel Shutoff Valve P/N 269A4598

Corrosion Inspection – Transmission Oil Pressure Switch P/N 269A4576

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

Installation of Transmission Chips Warning Light for P/N 269A6027 Tail Rotor Transmission Assembly