62-17-01 BEECH: Amdt. 467 Part 507 Federal Register July 26, 1962. Applies to All Model 278 Propellers With More Than 200 Hours' Time in Service Installed in Single Engine Tractor Type Aircraft Such as Beech Model A45 (T-34A), B45, D45 (T-34B), H35, and Subsequent Bonanza Aircraft.
Compliance required as indicated.
Cracks have occurred in the welded joint where the aft side of the hub barrel is joined to the hydraulic cylinder. Such cracks could lead to serious oil loss.
(a) Within the next 25 hours' of time in service after the effective date of this AD, and thereafter within each 100 hours' time in service, remove the propeller spinner and visually inspect for cracks and oil leaks in the weld area where the aft side of the hub barrel is joined to the hydraulic cylinder.
(b) At each propeller overhaul inspect the hub by magnetic particle inspection or FAA approved equivalent method. Give particular attention to the weld area where the aft side of the barrel is joined to the hydraulic cylinder.
(c) Replace cracked parts with new parts prior to further flight.
NOTE: Repairs are not permissible.
(Beech Propeller Service Bulletin No. 6 dated January 1962, applies to this subject.)
This directive effective August 27, 1962.