Airworthiness Directive · Amendment 39-14687 · Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes
Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes
Superseded. A later AD replaced this one: AD 2010-10-17. Comply with the one in force.
This AD affects the following airplane models and serial numbers that are certificated in any category:
| Type certificate | Models | Serial Nos. |
|---|---|---|
| (1) A2PC | MU-2B, MU-2B-10, MU-2B-15, MU-2B-20, MU-2B-25, and MU-2B-26 | 008 through 312, 314 through 320, and 322 through 347. |
| (2) A2PC | MU-2B-30, MU-2B-35, and MU-2B-36 | 501 through 651, 653 through 660, and 662 through 696. |
| (3) A10SW | MU-2B-25, MU-2B-26, MU-2B-26A, and MU-2B-40 | 313SA, 321SA, and 348SA through 459SA. |
| (4) A10SW | MU-2B-35, MU-2B-36, MU-2B-36A, and MU-2B-60 | 652SA, 661SA, and 697SA through 1569SA. |
We are adopting a new airworthiness directive (AD) for certain Mitsubishi Heavy Industries, Ltd. (MHI) MU-2B series airplanes. This AD requires you to incorporate text from the service information into the Limitations Section of the FAA-approved Airplane Flight Manual (AFM). This AD results from a recent safety evaluation that used a data-driven approach to analyze the design, operation, and maintenance of the MU-2B series airplanes in order to determine their safety and define what steps, if any, are necessary for their safe operation. Part of that evaluation was the identification of unsafe conditions that exist or could develop on the affected type design airplanes. Field reports indicate an unsafe condition of improper rigging and/or adjustment of the propeller feathering linkage. Service centers found the unsafe condition during inspections. We are issuing this AD to detect and correct improper rigging of the propeller feathering linkage. The above issue, if uncorrected, could result in degraded performance and poor handling qualities with consequent loss of control of the airplane.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| Incorporate the following information into the Limitations Section of the FAA-approved Airplane Flight Manual (AFM): (1) For airplanes listed in Type Certificate No. A2PC insert pages 3 and 4 from Mitsubishi Heavy Industries, Ltd. (MHI) MU-2 Service Bulletin No. 229, dated February 20, 1996. (2) For airplanes listed in Type Certificate No. A10SW insert page 3 of 3 from MHI MU-2 Service Bulletin No. 090/76-003, dated January 22, 1997. (3) For all of the above airplanes the logbook entry required after each pilot check on page 3 of MHI MU-2 Service Bulletin No. 090/76-003, dated January 22, 1997, and page 4 of MHI MU-2 Service Bulletin No. 229, dated February 20, 1996, is not required. | Within 100 hours time-in-service after August 24, 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 insert the information into the AFM as specified in paragraph (e) 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). |
Note: The language in the service information states the procedure is an “inspection,” but the procedure is a “pilot check.”
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
