Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Lower Coupling Drive Shaft PN 269A5504 (basic) and -5 Shaft Assembly- Wear Tolerance Gear Oleo Dampers
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: 400 Hour Inspection – Droop Stop Retainer Ring
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Inspection – Cable Belt Drive Clutch Control
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Inspection – Possible Retirement, Main Rotor Blades
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Overhaul Cycle; Main Rotor Gear Drive Assembly
Lycoming Service Instruction No . 1141 (dated), 20 Oct 1967 – Subject: Replacement of Wom Starter Ring Gears
Interim Revision – Handbook of Maintenance Instructions (HMI) Re: Special Torque Data – Forward Nut, Lower Pulley Drive Shaft
