# AD 79-24-02: Outer Fuel Tank Wiring - Type: Airworthiness directive - Status: Current - Products: Mitsubishi Heavy Industries MU-2B, MU-2B-10, MU-2B-15, MU-2B-20, MU-2B-25, MU-2B-26, MU-2B-26A, MU-2B-30, MU-2B-35, MU-2B-36, MU-2B-36A, MU-2B-40 and 1 more - Effective: November 21, 1979 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-3612 - Registered aircraft: 177 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/375F0CD0A8C4C12B86256A3A0070BEF9.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/79-24-02 ## The airworthiness directive 79-24-02 MITSUBISHI AIRCRAFT INTERNATIONAL, INC., (MAI): Amendment 39-3612. Applies to MAI Model MU-2B series, serial numbers 354SA, 356SA, 374SA, 387SA, 392SA, 393SA, 709SA, 723SA, 728SA, and other aircraft which have previously complied with Service Recommendation No. SR017/28-001, dated July 25, 1979; MU-2B-40, serial numbers 395SA through 412SA, 414SA, and 416SA; Model MU-2B-60, serial numbers 731SA through 747SA and 749SA through 757SA. Compliance is required within the next 50 hours' time in service after the effective date of this airworthiness directive, unless already accomplished, except that the airplane may be flown in accordance with FAR 21.197 to a base where the modifications can be performed. To prevent pumping fuel overboard, accomplish the following: Modify outer fuel tank switch wiring in accordance with Mitsubishi Aircraft International Service Bulletin No. SB013/28-001, dated October 18, 1979; or Service Bulletin No. SB014/28-002, dated October 18, 1979, as applicable; or an equivalent method. Mitsubishi Aircraft International Inc., Service Bulletin No. SB013/28-001 and Service Bulletin No. SB014/28-002 pertain to and provide instructions for accomplishing the intent of this AD. The manufacturer's procedures identified and described in this directive are incorporated herein and made a part thereof pursuant of U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Mitsubishi Aircraft International, Inc., Post Office Box 3848, San Angelo, Texas 76901. These documents may also be examined at Office of the Regional Counsel, Southwest Region, Federal Aviation Administration, 4400 Blue Mound Road, Fort Worth, Texas 76106. This amendment becomes effective November 21, 1979. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A2PC](https://openairdocs.org/tcds/A2PC): Mitsubishi Heavy Industries Ltd. 203; names 5 of 7 models: MU-2B, MU-2B-30, MU-2B-20, MU-2B-35, MU-2B-36 - [TCDS A10SW](https://openairdocs.org/tcds/A10SW): Mitsubishi Heavy Industries Ltd.; names 4 of 6 models: MU-2B-26A, MU-2B-36A, MU-2B-60, MU-2B-40 ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 177 (177 by airframe model, 0 by engine model) - Makers: Mitsubishi 177 Models with the most aircraft: - [Mitsubishi MU-2B-60](https://openairdocs.org/model/mitsubishi-mu-2b-60): 50 aircraft (airframe model) - [Mitsubishi MU-2B-40](https://openairdocs.org/model/mitsubishi-mu-2b-40): 35 aircraft (airframe model) - [Mitsubishi MU-2B-25](https://openairdocs.org/model/mitsubishi-mu-2b-25): 23 aircraft (airframe model) - [Mitsubishi MU-2B-26A](https://openairdocs.org/model/mitsubishi-mu-2b-26a): 19 aircraft (airframe model) - [Mitsubishi MU-2B-26](https://openairdocs.org/model/mitsubishi-mu-2b-26): 16 aircraft (airframe model) - [Mitsubishi MU-2B-20](https://openairdocs.org/model/mitsubishi-mu-2b-20): 12 aircraft (airframe model) - [Mitsubishi MU-2B-36A](https://openairdocs.org/model/mitsubishi-mu-2b-36a): 10 aircraft (airframe model) - [Mitsubishi MU-2B-36](https://openairdocs.org/model/mitsubishi-mu-2b-36): 7 aircraft (airframe model) - [Mitsubishi MU-2B-35](https://openairdocs.org/model/mitsubishi-mu-2b-35): 4 aircraft (airframe model) - [Mitsubishi MU-2B](https://openairdocs.org/model/mitsubishi-mu-2b): 1 aircraft (airframe model) All 10 models: https://openairdocs.org/ad/79-24-02/models.md Every aircraft: https://openairdocs.org/ad/79-24-02/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.