COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Piper PA-31 Series Aeroplanes
AD/PA-31/77
Amdt 1
Fuel Crossfeed Valve - Inspection 9/79
Applicability: Models PA-31, PA-31-300 and PA-31-325 with S/Nos. 31-2 to 31-7812108, 31- 7812116, 31-7812120 to 31-7812123 and 31-7812125. Model PA-31-350 with S/Nos.
31-5001 to 31-7852138, 31-7852140 to 31-7852193.
Document: Piper SB No. 645A.
Compliance: Within 100 hours time in service after 30 September 1979.
Background: A number of crossfeed valve actuating arms may have been attached to the valve with aluminium rivets instead of steel rivets. Shearing of the softer rivets would result in loss of crossfeed capability.