COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes AD/PA-22/27 Rapid Throttle Movement - Warning Placard 6/73 Applicability: Models PA-22-150, PA-22S-150, PA-22-160, PA-22S-160 fitted with Lyc. 0-320 engines equipped with Marvel Schebler carburettors model MA-4SPA P/Nos. 10- 3678-11, 10-3678-12, 10-3678-32; and other PA-22 series aircraft which have been modified to these engines/carburettor configurations. Requirement: 1. Attach the following placard to the instrument panel near the throttle control and in full view of the pilot using letters of 1/8" maximum size: "DO NOT OPEN THROTTLE RAPIDLY - IDLE TO FULL THROTTLE IN 2 SECONDS MINIMUM". Note: The placard may be fabricated by the owner or operator. or 2. FAA AD 73-9-6. Compliance: Within 10 hours time in service after 9 May 1973.