Airworthiness Directives; DOWTY ROTOL: Applies to Accessory Gear Boxes (c) PTG. 14/6A and B installed on Hawker Siddeley Argosy Type AW650 Series 101 Airplanes, (c) PTG. 14/8 Installed on Grumman Model G-159 Series Airplanes, and (c) PTG. 14/1 and 14/2B Installed on Vickers Viscount Model 810 Airplanes
Unsafe Condition: Fatigue failure of the tunnel drive shaft and excessive wear on the tunnel shaft serrations.
Effective: Jun 23, 1970
Category: appliance
Compliance: At next gear box overhaul after the effective date of this AD, unless already accomplished.
Why matched: Airworthiness Directives; DOWTY ROTOL: Applies to Accessory Gear Boxes (c) PTG. 14/6A and B installed on Hawker Siddeley Argosy Type AW650 Series 101 Airplanes, (c) PTG. 14/8 Installed on Grumman Model G-159 Series Airplanes, and (c) PTG. 14/1 and 14/2B Installed on Vickers Viscount Model 810 Airplanes