55-09-02 CURTISS-WRIGHT: Applies to all C-46 Series aircraft.
Compliance required as indicated.
(1) For Models C-46A and C-46D.
At each 3,000 hours of operation inspect visually and at each major overhaul inspect by means of Zyglo or equivalent method control column base assemblies P/N 20-530- 3076-5, arm assemblies P/N 20-530-1049-1 and -3, terminal assemblies P/N 20-530-1286-1 and - 3, and upper terminal assemblies P/N 20-530-1059. Also inspect for cracks around the rivets which retain the assemblies to the torque tube P/N 20-530-1163-2.
(2) For Models C-46E and C-46F.
Due to recent similar failures reported on these models, the assemblies corresponding to the above Model C-46A and C-46D assemblies must be similarly inspected.
All defective parts must be replaced.
This supersedes AD 51-14-2.