59-06-06 VICKERS: Applies to All Viscount 810 Series Aircraft.
Compliance required as indicated.
In order to rectify a manufacturing error on bearing channel 81003-1063, Vickers- Armstrongs recommends the following corrective action: Inspect for signs of distortion or cracks on vertical bearing channel 81003-1061 on upper side of chassis pivot support block at wheel bay side of outer rib of inboard nacelles. The inspection must be made within 135 flying hours and every subsequent 135 flying hours until the outer rib reinforcement is incorporated. The outer rib reinforcement must be incorporated by July 1, 1959. The British Air Registration Board considers this mandatory. The FAA concurs with this action and considers compliance therewith mandatory.
(Vickers-Armstrongs Modification Bulletin G.1656 covers this subject.)