Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Overhaul Cycle, Tail Rotor Drive Transmission Assembly
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Special Torque Data – Forward Nut, Lower Pulley Drive Shaft
Lycoming Service Instruction No . 1141 (dated), 20 Oct 1967 – Subject: Replacement of Wom Starter Ring Gears
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Overhaul Cycle; Main Rotor Gear Drive Assembly
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Inspection – Cable Belt Drive Clutch Control
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: 400 Hour Inspection – Droop Stop Retainer Ring