Airworthiness directives › 2015-01-02
AD 2015-01-02 Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Airplanes
Models named: MU-2B-30, MU-2B-35, MU-2B-36, MU-2B-36A, MU-2B-60. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Mitsubishi Heavy Industries, Ltd. Models MU-2B-30, MU-2B-35, and MU-2B-36 airplanes, serial numbers 502 through 651, 653 through 660, and 662 through 696, and Models MU-2B-36A and MU-2B-60 airplanes, serial numbers 661SA, 697SA through 799SA, and 1501SA through 1569SA, certificated in any category.
Compliance
Unless already done, do the actions in paragraphs (f)(1) through (f)(3) of this AD. (1) Within the next 1,000 hours time-in-service (TIS) after February 26, 2015 (the effective date of this AD) or within the next 3 years after February 26, 2015 (the effective date of this AD), whichever occurs first, inspect the side and lower frames at frame station (STA) 4610 and STA 5605 for cracks and corrosion. Do the inspection following paragraphs 3.0 through 3.3 of Mitsubishi Heavy Industries, Ltd. MU-2 Service Bulletin No. 242, dated July 10, 2013, or Mitsubishi Heavy Industries, Ltd. MU-2 Service Bulletin No. 104/53-003, dated July 22, 2013, as applicable. (2) If any crack is found during the inspection required in paragraph (f)(1) of this AD, before further flight, do the actions in paragraphs (f)(2)(i) or (f)(2)(ii) of this AD: (i) Repair the frame following paragraphs 4.0 and 5.0 of Mitsubishi Heavy Industries, Ltd. MU-2 Service Bulletin No. 242, dated July 10, 2013, or Mitsubishi Heavy Industries, Ltd. MU-2 Service Bulletin No. 104/53-003, dated July 22, 2013, as applicable; or (ii) Replace the frame following paragraphs 4.0, 6.0, and 7.0 of Mitsubishi Heavy Industries, Ltd. MU-2 Service Bulletin No. 242, dated July 10, 2013, or Mitsubishi Heavy Industries, Ltd. MU-2 Service Bulletin No. 104/53-003, dated July 22, 2013, as applicable. (3) If any corrosion is found during the inspection required in paragraph (f)(1) of this AD, before further flight, repair the damage following the instructions in paragraph 3.2 of Mitsubishi Heavy Industries, Ltd. Service Bulletin No. 242, dated July 10, 2013, or Mitsubishi Heavy Industries, Ltd. Service Bulletin No. 104/53-003, dated July 22, 2013, as applicable.
Required actions
The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, 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: Kenneth A. Cook, Aerospace Engineer, FAA, Fort Worth Airplane Certification Office (ACO), 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone: (817) 222-5475; fax: (817) 222-5960; email: Kenneth.A.Cook@faa.gov. 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. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (3) Reporting Requirements: For any reporting requirement in this AD, a federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave. SW., Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as stress corrosion cracking in the flanges of the airframes at stations 4610 and 5605. We are issuing this AD to detect and correct structural cracks in the airframe flanges, which could reduce the structural integrity of the airplane.
Affected ADs
None.
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