COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Propellers - Variable Pitch - Hamilton Standard
AD/PHS/16 Blade Retaining Rings 6/94
Applicability: All 14RF-9 and 14RF-21 propellers fitted to Embraer 120 or CASA CN-235 aircraft. Requirement: Unless previously carried out action in accordance with Hamilton Standard Service
Bulletin 14RF-9-61-25 Revision 3 or 14RF-21-61-34 Revision 2, as applicable.
Compliance: At next propeller removal or by 31 December 1994, whichever occurs first. Background: Advice has been received that during extreme inflight conditions blade separation,
due to failure of a plastic (Rynite) blade retaining ring, has occurred.