COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Propellers - Variable Pitch - McCauley AD/PMC/31 Propeller Blade Actuating Pin Installation - Inspection 11/76 Applicability: Propeller Model Series No Propeller Model Serial No D2A34C49( ) 692417 2A34C66( ) 727628 D2A34C49( ) 703405 2A34C66( ) 732194 D2A34C50( ) 64746 E2A34C73( ) 720673 D2A34C50( ) 690329 E2A34C73( ) 721615 D2A34C58( ) 721610 E2A34C73( ) 732503 OR 734269 2A36C23( ) 64358 F2A34C58( ) 736436 2A36C23( ) 66786 D2A36C33( ) 61005 D2A36C33( ) 611491 Note: The Sixteen propellers listed by specific S/No. are the only ones affected by this Airworthiness Directive. Requirement: The above referenced propellers may have blade ferrules with incorrectly drilled (shallow) actuating pin holes. Dismantle the propeller and inspect to ensure that the correct pins are installed in the blade ferrules, and that the blade actuating pin holes in the ferrules are drilled and tapped to the depth listed in McCauley Service Manual 720415. Repair or replace as necessary, any improperly installed blade actuating pins, washers, or blade ferrules, and re-assemble the propeller in accordance with McCauley Service Manual 720415, or later applicable issue. Note that the shallow actuating pin hole modification listed in McCauley SB No. 99 is not applicable to the above propeller models. or FAA AD 76-19-04. Compliance: Within 100 hours time in service after 30 November 1976.