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Thu, Feb 10, 2005

CASA Urgent AD: Boeing

A D Number: AD/B737/125
Manufacturer:
Boeing
Subject: Center Wing Fuel Tank Float Switch Wiring
Applicability: Model 737-200, -200C, -300, -400 and -500 series aeroplanes, on which center wing fuel tanks are activated.
Requirement: Accomplish the following on Model 737-200, -300, -400 and -500 series airplanes having line numbers 1 to 3108 inclusive.
Summary: Remove the fuelling float switch and wiring from the center fuel tank and perform a detailed visual inspection of the float switch wiring, in accordance with Boeing Alert Service Bulletin (ASB) 737-28A1132 dated 2 December 1998 or Revision 1 dated 15 January 1999 or Revision 2 dated 17 June 1999, to detect discrepancies (i.e. evidence of electrical arcing; exposure of the copper conductor; presence or scent of fuel on the electrical wiring; or worn insulation).

FMI: www.casa.gov.au

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