COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Aerospatiale Rallye Series Aeroplanes AD/MSR/10 Firewall Sealing - Modification 10/70 Applicability: All models 880B, 885, 893A and 894A. Requirement: 1. Replace the existing firewall sealant with a fireproof sealant; or 2. FAA AD 70-17-6. Compliance: Within 100 hours time in service after 30 October 1970.