2006-16-04: Inspection of the fuel nozzle screen

2006-16-04 Rolls-Royce Corporation (formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison): Amendment 39-14704. Docket No. 2004-NE-10-AD. Effective Date (a) This airworthiness directive (AD) becomes effective September 7, 2006. Affected ADs (b) This AD supersedes AD 2004-24-09, Amendment 39-13885. Applicability (c) This AD applies to Rolls-Royce Corporation (formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C series turboshaft and turboprop engines in the following Table 1: 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 C10D 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 These engines are installed on, but not limited to, the aircraft listed in the following Table 2: Table 2. Engines Installed on, But Not Limited To Manufacturer Model AeroSpace Technologies of Australia Pty Ltd N22B, N22S, and N24A. Agusta A109, A109A, A109AII, and A109C. Arrow Falcon Exporters OH 58A, OH 58A+, and OH 58C. Bell Helicopter Textron 206A, 206A 1, 206B, 206L, 206L 1, 206L 3, 206L 4, 230, 407, and 430. B N Group BN 2T and BN 2T 4R. Enstrom Helicopter TH28, 480; and 480B. Eurocopter Canada Limited BO 105 LS A 3. Eurocopter Deutschland BO 105A, BO 105C, BO 105LS A 1, and BO 105S. Eurocopter France AS355E, AS355F, AS355I, and AS355F2. FH 1100 Manufacturing Corporation 100, 420, and MX 7 420A. Garlick Helicopters OH 58A, OH 58A+, OH 58C; Maule zm 7 420A, MT 7 420, MX 7 420, MX 7 420A. MD Helicopters Inc 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N. San Joaquin Helicopters OH 58A, OH 58A+, and OH 58C. Schweizer TH269D. SIAI Marchetti s.r.l SF600 and SF600A. Sikorsky Aircraft Corporation S 76A. Vulcanair S.p.A AP68TP 300, and AP68TP 600. Unsafe Condition (d) This AD is prompted by the discovery that several part numbers (P/Ns) of fuel nozzles were inadvertently left out of AD 2004-24-09. That AD, as worded, allows certain P/N fuel nozzles back into service. Those fuel nozzles must not be allowed back into service. We are issuing this AD to minimize the risk of sudden loss of engine power and uncommanded shutdown of the engine due to fuel contamination and collapse of the screen in the fuel nozzle. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. (f) Perform a onetime inspection of the screens in fuel nozzles as follows: (1) For fuel nozzles with a P/N listed in Table 3 of this AD, inspect the screen for contamination within 50 operating hours after the effective date of this AD. Table 3. Fuel Nozzles To Be Inspected Within 50 Operating Hours Manufacturer P/N Corresponding RRC vendor P/N 6874959 5232815 6894610 5233465 RRC 6898531 5233585 47069 N/A 47101 N/A Goodrich Delavan (Parts Manufacturer Approval (PMA)) 49445 N/A (2) For fuel nozzles with a P/N listed in Table 4 of this AD, inspect the screen for contamination within 150 operating hours after January 5, 2005. Table 4. Fuel Nozzles To Be Inspected Within 150 Operating Hours Manufacturer P/N Corresponding RRC vendor P/N RRC 6852020 5232480 6890917 5233333 6899001 5233600 (g) If you find contamination on the screen, inspect and clean the entire aircraft fuel system before further flight. (h) At the next fuel nozzle overhaul after the effective date of this AD, do the following:(1) Remove from service fuel nozzles listed in Table 3 and Table 4 of this AD. (2) Replace with a serviceable fuel nozzle. Definition (i) For the purposes of this AD, a serviceable fuel nozzle is defined as a nozzle that has a P/N not specified in, or addressed by, this AD. Previous Credit (j) Previous credit is given for onetime inspections of fuel nozzles, RRC P/Ns 6852020, 6890917, and 6899001 using AD 2004-24-09. Alternative Methods of Compliance (k) The Manager, Chicago Aircraft Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (l) Information related to the subject of this AD can be found in Rolls-Royce Corporation Alert Commercial Engine Bulletins (CEBs), all at Revision 1, and all dated August 30, 2004, listed in the following Table 5: Table 5. 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