COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
SIAI Marchetti 260 Series Aeroplanes
AD/SM-260/14
Amdt 1
Governor Relief Valve Spring - Inspection 9/83
Applicability: All SIAI-Marchetti F260, F260B and F260C models equipped with the following propeller governors;
HARTZELL | SIAI EQUIVALENT |
F4-4A | 260-13-272-01 |
F4-4A (Reset into FA-11) | 260-23-272-05 |
F4-112 | 260-13-272-03 |
F6-15A | 260-13-272-07 |
F4-4A | 260-13-272-09 |
Document: SIAI Marchetti Service Bulletin 260 B35.
Note: FAA AD 83-06-10 refers.
Compliance: For those governors with a relief valve body which has a rectangular port, by 31 July 1983 and every maintenance release inspection thereafter. For those governors with a relief valve body which has a round port, by 31st July 1983 and every 500 hours time in service thereafter.
Background: 1. The manufacturer advises instances of spring P/No. A3107 breakage. Breakage of this spring can cause lowering of governor oil pressure and a harmful “overspeed” of the propeller.
2. This AD has been reprinted to correct a typographical error under applicability for Hartzell FA-112, SIAI equivalent should read 260-13-272-03.