COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Propellers - Variable Pitch - Dowty Rotol
AD/PR/21 Hub Assembly - Inspection of Blade Sockets NK
Applicability: All model (c) R212/4-30-4/22/1 propellers (Argosy 222), not modified in accordance with Mod. VP 2388.
Requirement: With the aid of a 3X magnifying glass, visually inspect for cracks the complete accessible exterior surface of the hub P/N RA60600, paying particular attention to the areas between the blade sockets, and the rear half circumference of the sockets.
Compliance: Within 25 hours time in service after 1 November 1978.