COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes AD/AA-1/13 Stall and Spin Placards - Installation 8/73 Applicability: All models. Requirement: 1. Install a placard on the instrument panel in full view of the pilot stating "SPINS PROHIBITED". 2. Install a placard worded as follows, and as applicable on the instrument panel adjacent to the Airspeed Indicator. Model AA-1A Model AA-1B STALL SPEED KTS. IAS. STALL SPEED KTS. IAS. Bank Angle Bank Angle Condition 0 20 40 60 Condition 0 20 40 60 Flaps Up 54 56 62 76 Flaps Up 56 58 64 79 Flaps Down 52 54 59 74 Flaps Down 53 55 61 75 1500 lbs Power Off 1560 lbs Power Off Compliance: Before 5 September 1973.