AD/CESSNA 500/29 - Wing Fuel Boost Pump Wiring (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 500 (Citation) Series Aeroplanes AD/CESSNA 500/29 Wing Fuel Boost Pump Wiring 8/2007 TX

Applicability: Cessna Model 500 and 501 model aeroplanes with serial numbers 001 through 0689 inclusive. Requirement: 1. If not previously accomplished, revise the Limitations Section of the applicable Cessna aircraft flight manual (AFM) to prohibit use of the wing fuel boost pumps for defueling under certain conditions, by inserting the applicable temporary change identified in the following table. AFM Temporary Change Dated AFM

500FM TC-R57-01 5 April 2004 Cessna Model 500 500FM TC-R57-02 5 April 2004 Cessna Model 500 500FM TC-R57-03 5 April 2004 Cessna Model 500 2. If not previously accomplished, install a placard close to the fuel quantity gauge, in accordance with the Accomplishment Instructions of the Cessna Service Bulletin SB500-28-12 dated 14 June 2004. In addition to the specifications in the service bulletin, the letters on the placard must be at least 6mm (1/4 inch) tall. 3. If not previously accomplished, carry out the following actions in accordance with the Accomplishment Instructions of SB500-28-12: a. Do a detailed inspection for chafed wiring of the wing fuel boost pumps. b. Modify the wing fuel boost pumps. Note 1: For the purposes of this Directive, a detailed inspection is: "An intensive examination of a specific item, installation or assembly to detect damage, failure or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.'' Note 2: Actions required by this Directive may have been previously accomplished in accordance with FAA AD 2006-06-03.