62-16-04 PIAGGIO: Amdt. 463 Part 507 Federal Register July 13, 1962. Applies to Model P.166 Aircraft, Serial Numbers 341 to 403 Inclusive.
Compliance required as indicated.
In order to preclude failure of the frame 20 angle bar at the attachment of the elevator control sector bracket, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD and thereafter within each 20 hours' time in service, inspect the frame 20 angle bar for cracks in the area of the elevator control sector bracket attachment.
(b) If cracks are found, repair in accordance with the procedures specified under Second Assumption in Piaggio Service Bulletin 166-16, or FAA approved equivalent prior to further flight. When this has been accomplished the inspections required in (a) may be discontinued.
(c) The inspections required in (a) may be discontinued after incorporating the reinforcement specified under First Assumption in Piaggio Service Bulletin 106-16 or FAA approved equivalent.
This directive effective July 20, 1962.