Document ID: chunk:federal_register_of_legislation:F2006L02862:body:0:p1
Version: federal_register_of_legislation:F2006L02862
Segment Type: other
Provision Reference: 
Character Range: 0–3833

AIRWORTHINESS DIRECTIVE
On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/AL 250/85 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.

Allison Turbine Engines - 250 Series
AD/AL 250/85 Amdt 1  Fuel Nozzle Screen  10/2006

Applicability:  Rolls Royce Corporation (Allison) 250-B and 250-C series turboshaft and turboprop engines as listed in Table 1 of this Directive.

                TABLE 1. - 250-B AND 250-C SERIES TURBOSHAFT
                AND TURBOPROP ENGINES AFFECTED
                -B15A    -B15E    -B15G    -B17     -B17B     -B17C
                -B17D    -B17E    -B17F    -B17F/1  -B17F/2   - C10
                -C10B    -C10C    -C18     -C18A    -C18B     -C18C
                -C20     -C20B    -C20C    -C20F    -C20J     -C20R
                -C20R/1  -C20R/2  -C20R/4  -C20S    -C20W     -C28
                -C28B    -C28C    -C30     -C30G    -C30G/2   -C30M
                -C30P    -C30R    -C30R/1  -C30R/3  -C30R/3M  -C30S
                -C30U    -C40B    -C47B    -C47M

Requirement:       1. Perform a onetime inspection of the screens in fuel nozzles for contamination.

                   2. If you find contamination on the screen, inspect and clean the entire aircraft fuel system.

                   3. Remove from service fuel nozzles listed in Table 3 and Table 4 of this AD and replace with a serviceable fuel nozzle.

                   For the purposes of this AD, a serviceable fuel nozzle is defined as a nozzle that has a part number (P/N) not specified in, or addressed by, this AD.

             Information pertaining to this subject can be found in Rolls-Royce Corporation Alert Commercial Engine Bulletins (CEBs), all at Revision 1, and all dated 30 August 2004, listed in the following Table 2:

             Table 2. - Related Alert Commercial Engine Bulletins
                  CEB-A-313          CEB-A-73-5029
                  CEB-A-73-2075      CEB-A-73-6041
                  CEB-A-1394         TP CEB-A-183
                  CEB-A-73-3118      TP CEB-A-1336
                  CEB-A-73-4056      TP CEB-A-73-2032

             Note:  FAA AD 2006-16-04 Amdt 39-14704 dated 27 July 2006 refers.  This AD supersedes FAA AD 2004-24-09.
Compliance:     1. For fuel nozzles with a P/N listed in Table 3 of this AD, within 50 operating hours after the effective date of this AD, unless previously accomplished.

             Table 3. - Fuel Nozzles To Be Inspected Within 50 Operating Hours
               Manufacturer                                           P/N            Corresponding RRC vendor P/N
               RRC                                                          6874959       5232815
                   6894610                                                 5233465
                   6898531                                                 5233585
               Goodrich Delavan (Parts Manufacturer Approval (PMA))         47069         N/A
                   47101                                                   N/A
                   49445                                                   N/A

                For fuel nozzles with a P/N listed in Table 4 of this AD, within 150 operating hours after 17 March 2005 (the effective date of