COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Propellers - Fixed Pitch AD/PFP/2 Amdt 1 Sensenich Propellers - Hub Inspection NK Applicability: All model M74DM installed on Lycoming 0-320-B series engines except propellers with an "A" or "K" S/No. prefix and all Model M74DM regardless of S/No. prefix, installed on all Lycoming 0-320 series engines when used in agricultural operations. Document: Sensenich SB No. R-8. Compliance: At intervals not exceeding 100 hours time in service.