AD/FSM/29 Amdt 4 - Precision Airmotive Corporation Carburettors (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/FSM/29 Amdt 3 and issues the following 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.

Fuel Supply and Metering Equipment AD/FSM/29 Amdt 4 Precision Airmotive Corporation Carburettors 10/2005

Applicability: Precision Airmotive Corporation (PAC, formerly Facet Aerospace Products Corporation and Marvel-Schebler Corporation) Model MA-3, MA-3A, MA-3PA, MA-3SPA, MA-4SPA carburettors installed on but not limited to Textron Lycoming O-235, O-290, and O-320 series engines, and Teledyne Continental Motors (TCM) A-65, A-75, C-75, C-85, C-90, C-115, C-125, C-145, O-200, and O-300 series engines. Requirement: Model MA-3A, MA-3PA, MA-3SPA, and MA4-SPA carburettors:

1. Inspect the carburettor to determine if a two-piece venturi is installed. If a two-piece venturi is installed, inspect the carburettor to determine if the primary venturi is loose or missing.

2. If a two-piece venturi is installed and the primary venturi is found loose or missing, repair the carburettor by installing a serviceable two-piece venturi or by installing a one-piece venturi as per provisions of Precision Airmotive Service Bulletin (SB) No. MSA-2, Revision 1, 2, 3 or later FAA approved revision.