AD 2008-22-11 Airworthiness Directives; Hawker Beechcraft Corporation Model 390 Airplanes

Makes named: hawker beechcraft. Models named: 390. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to the following Model 390 airplanes that are certificated in any category: (1) Serial numbers RB-1 and RB-4 through RB-209 equipped with hose kit 390-5805-0001 installed during compliance with Hawker Beechcraft Mandatory Service Bulletin 29-3800, dated May 2007); and (2) Serial numbers RB-210 though RB-239.

To address this problem, you must do the following, unless already done:   Actions Compliance Procedures (1) Initially inspect for suspect engine hydraulic pump pressure output hose assemblies, left part number (P/N) 170H143-6CR-0174 and right P/N 170H192D0394C275, by looking at the identification tags for work order numbers and manufacturing dates listed in Table 1 of the Hawker Beechcraft Mandatory Service Bulletin SB 29-3897, dated August 2008. If, as a result of this inspection, you find these affected hose assemblies are not installed, no further action is required Within 10 hours time-in-service (TIS) after November 3, 2008 (the effective date of this AD). Follow Hawker Beechcraft Mandatory Service Bulletin SB 29-3897, dated August 2008. (2) If as a result of the inspection required in paragraph (e)(1) of this AD, you find one of the hose assemblies is installed, inspect for evidence of hydraulic fluid leakage Initially within 10 hours time-in-service (TIS) after November 3, 2008 (the effective date of this AD) and repetitively thereafter at intervals not to exceed 10 hours TIS until whichever of the following occurs first: Follow Hawker Beechcraft Mandatory Service Bulletin SB 29-3897, dated August 2008.   (i) When 40 hours total TIS is accumulated on the installed hose assembly; or   (ii) When the hose assembly is replaced following the procedures in the service information. (3) Replace the hose assembly Replace following paragraph (e)(3)(i) or (e)(3)(ii), whichever applies and occurs first: Follow Hawker Beechcraft Mandatory Service Bulletin SB 29-3897, dated August 2008.   (i) Before further flight after any inspection where hydraulic fluid leakage was found; or   (ii) Within the next 200 hours TIS after November 3, 2008 (the effective date of this AD) or within the next 6 months after November 3, 2008 (the effective date of this AD), whichever occurs first. (f) The replacement required by paragraph (e)(3) of this AD is terminating action for this AD. This replacement may be done instead of the inspections required by paragraphs (e)(1) and (e)(2) of this AD. Alternative Methods of Compliance (AMOCs) (g) The Manager, Wichita Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Mike Imbler, Aerospace Engineer, Wichita ACO, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-4147; fax: (316) 946-4107. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. Material Incorporated by Reference (h) You must use Hawker Beechcraft Mandatory Service Bulletin SB 29-3897, dated August 2008 to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Hawker Beechcraft Corporation, P.O. Box 85, Wichita, Kansas 67201-0085; telephone: (800) 429-5372 or (316) 676-3140; Internet: http://pubs.hawkerbeechcraft.com . (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html . Issued in Kansas City, Missouri, on October 17, 2008. John Colomy, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E8-25284 Filed 10-23-08; 8:45 am] BILLING CODE 4910-13-P

This AD is the result of reports of hydraulic leaks from the hydraulic pump pressure output hose assemblies. We are issuing this AD to prevent leakage of hydraulic fluid from the pump output hose within the engine compartment, which could cause an in-flight fire.