AD 2006-26-08 Airworthiness Directives; Raytheon Aircraft Company Model 390 Airplanes

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

This AD applies to Model 390 airplanes, all serial numbers, that are certificated in any category:

To address this problem, you must do the following, unless already done:   Actions Compliance Procedures (1) Visually inspect the hydraulic pump outlet tube for evidence of chafing, excessive vibration, wear, deterioration, or hydraulic fluid leakage, as follows: (i) For the left-hand (LH) engine: Remove the clamp, perform the inspection, and replace the clamp with a new one as specified in Raytheon Mandatory Service Bulletin No. SB 29-3771 after each inspection (ii) For the right-hand (RH) engine: Perform the inspection. Removal and replacement of the clamps are not necessary Initially at whichever of the following occurs first and thereafter at intervals not to exceed 25 hours time-in-service (TIS): (A) Within the next 25 hours TIS after December 28, 2006 (the effective date of this AD); or (B) At the next inspection required by AD 2006-02-51 Inspect following Raytheon Safety Communique No. 267, dated January 2006. Raytheon Safety Communique No. 267, dated January 2006, addresses the LH engine. Use the same inspection procedures for the RH engine hydraulic pump outlet tube (P/N 390-580037). Remove and replace the clamp (LH only) following Raytheon Mandatory Service Bulletin No. SB 29-3771, dated January 2006. (2) Replace the hydraulic pump outlet tube, Part Number (P/N) 390-580035 (or FAA-approved equivalent) for the LH engine or P/N 390-580037 (or FAA-approved equivalent) for the RH engine Each and every time any of the following occurs: (i) Prior to further flight after any inspection from paragraph (e)(1) of this AD where evidence of chafing, excessive vibration, wear, deterioration, or hydraulic fluid leakage is found; and (ii) Within 1 hour TIS following identification of an intended or unintended engine operation with the hydraulic valve closed. Raytheon Aircraft Premier 1 Model 390 Maintenance Manual, P/N 390-590001-0015. (3) Incorporate Raytheon Aircraft Company Part Number 390-590001-0003C3TC6, dated September 16, 2006 into the Airplane Flight Manual (AFM) Within 5 days after December 28, 2006 (the effective date of this AD) The owner/operator holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) may do the AFM changes requirement of this AD. Make an entry into the aircraft records showing compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9). Alternative Methods of Compliance (AMOCs) (f) The Manager, Wichita Aircraft Certification Office, FAA, ATTN: James P. Galstad, Propulsion Aerospace Engineer, ACE 116W, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-4135; fax: (316) 946-4107, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Material Incorporated by Reference (g) You must use Raytheon Mandatory Service Bulletin No. SB 29-3771, dated January 2006; and Raytheon Safety Communique No. 267, dated January 2006, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register previously approved this incorporation by reference under 5 U.S.C. 552(a) and 1 CFR part 51 on February 2, 2006 (71 FR 5581, February 2, 2006). (2) For service information identified in this AD, contact Raytheon Aircraft Company, P.O. Box 85, Wichita, Kansas 67201-0085; telephone: (800) 625-7043. (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 December 22, 2006. Kim Smith, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E6-22382 Filed 12-27-06; 8:45 am] BILLING CODE 4910-13-P

This AD is the result of several hydraulic pump outlet tube failures after issuance of AD 2006-02-51. We are issuing this AD to prevent failure of the hydraulic pump outlet tubes and consequent leaking of hydraulic fluid. Such leakage could result in a fire. There is also a risk of loss of hydraulic system functions including normal gear extensions, speed brakes, roll spoilers, lift dump, and normal brakes.