AD/Cessna 310/58 Fuel Flow Transducer (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Cessna 310 Series Aeroplanes

AD/CESSNA 310/58 Fuel Flow Transducer 5/2008

Applicability:	Cessna Model 310R series aeroplane with serial number 1865.
Requirement:	1.    Inspect fuel flow transducer Cessna part number (P/N) 9910395-9 (Aerosonics Corp P/N 33184-2) on each engine to determine the serial number.
2.    If the P/N 9910395-9 transducer has a serial number included in the block 2364 through 2930, replace the transducer with a transducer whose serial number is not included in that block.
Note 1:  The requirements of this Directive were most likely accomplished prior to the aircraft’s arrival in Australia and the aircraft’s maintenance records would indicate compliance with FAA AD 80-13-14, this is considered acceptable for compliance with this Directive.
Note 2:  FAA AD 80-13-14 Amdt 39-3844 refers.
Compliance:	For Requirement 1 - Prior to the issue of an Australian Certificate of Airworthiness.
For Requirement 2 - Before further flight after the Requirement 1 inspection.
This Airworthiness Directive becomes effective on 8 May 2008.
Background:	This Directive follows an internal review of Australian Airworthiness Directives (AD) which indicated an Australian AD was not issued in response to FAA AD 80-13-14.  The FAA AD was originally issued to detect and replace possible defective fuel flow transducers which may cause fuel leaks in the engine compartment.

CASA acknowledges that currently the only affected 310R aeroplane in not on the Australian register of aircraft.  However, this aeroplane may be imported at a later date and may not be in compliance with FAA AD 80-13-14, CASA is obliged to issue an AD reflecting the requirements of an AD issued by the State of design of the aircraft or appliance, in this case FAA AD 80-13-14.  Consequently, given the time since the FAA AD was made and that similar incidents have not been reported in Australia, CASA has decided that the initial compliance should be ‘Prior to the issue of an Australian Certificate of Airworthiness’.

David Punshon
Delegate of the Civil Aviation Safety Authority

6 March 2008