Document ID: chunk:federal_register_of_legislation:F2006L01080:body:0:p1
Version: federal_register_of_legislation:F2006L01080
Segment Type: other
Provision Reference: 
Character Range: 0–9076

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 550 (Citation II) Series Aeroplanes
AD/CESSNA 550/26  Wing Fuel Boost Pumps  6/2006 DM

Applicability:  Cessna Model S550, 550 and 551 model aeroplanes with serial numbers as follows:
                   Model                                                                                                                                                                                                                                                                                                                                                                                                                        Serial Number Range

                   S550                                                                                                                                                                                                                                                                                                                                                                                                                         0001 through 0160 inclusive
                   550 and 551                                                                                                                                                                                                                                                                                                                                                                                                                  0002 through 0733 inclusive
                   550                                                                                                                                                                                                                                                                                                                                                                                                                          0801 through 1075 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 Cessna Service Bulletin SB550-28-14, dated 2 December 2003, or in the following table.
                   AFM Temporary Change                                                                                                                                                                                                                                                                                                                                                                                                         Dated                        AFM

                    55BFM TC–R10–07                                                                                                                                                                                                                                                                                                                                                                                                               17 March 2004              Model 550 Citation Bravo
                    55BFM TC–R10–08                                                                                                                                                                                                                                                                                                                                                                                                               17 March 2004              Model 550 Citation Bravo
                    55BFM TC–R10–09                                                                                                                                                                                                                                                                                                                                                                                                               17 March 2004              Model 550 Citation Bravo
                    S55CA TC–04–01                                                                                                                                                                                                                                                                                                                                                                                                                8 July 2004                Model S550 Citation S/II
                    S55CA TC–04–02                                                                                                                                                                                                                                                                                                                                                                                                                8 July 2004                Model S550 Citation S/II
                    S55CA TC–04–03                                                                                                                                                                                                                                                                                                                                                                                                                8 July 2004                Model S550 Citation S/II
                    S55FM TC–04–01                                                                                                                                                                                                                                                                                                                                                                                                                4 March 2004               Model S550 Citation S/II
                    S55FM TC–04–02                                                                                                                                                                                                                                                                                                                                                                                                                4 March 2004               Model S550 Citation S/II
                    S55FM TC–04–03                                                                                                                                                                                                                                                                                                                                                                                                                4 March 2004               Model S550 Citation S/II
                   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 SB550-28-08 dated 7 May 2004, SB550-28-14 dated 2 December 2003, or SB550-28-15 dated 20 January 2004, as applicable.  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 action in accordance with the Accomplishment Instructions of SB550-28-08, SB550-28-14, or
                   SB550-28-15, as applicable:

                  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,