Airworthiness Directive · Amendment 39-14726 · Mitsubishi Heavy Industries MU-2B Series Airplanes
Mitsubishi Heavy Industries MU-2B Series Airplanes
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, and MU-2B-26A, and MU-2B-40 | 313SA, 321SA, and 348SA through 459SA. |
| (4) A10SW | MU-2B-35, MU-2B-36A, and MU-2B-60 | 652SA, 661SA, and 697SA through 1569SA. |
The FAA adopts a new airworthiness directive (AD) for all Mitsubishi Heavy Industries (MHI) MU-2B series airplanes. This AD requires you to do flight checks of the rigging of the engine and propeller systems. This AD results from a recent safety evaluation that used a data-driven approach to evaluate 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. We are issuing this AD to detect and correct improper adjustment of the flight idle fuel flow setting. This condition, if uncorrected, could result in degraded performance and poor handling qualities with consequent loss of control of the airplane in certain situations.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| Do flight checks of the rigging of the engine and propeller systems and make any necessary corrections. 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 these actions. Make an entry into the aircraft logbook showing compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9) | Check within 100 hours time-in-service (TIS) after September 22, 2006 (the effective date of this AD), and repetitively thereafter at intervals not to exceed 100 hours TIS. If any corrections are necessary, make the corrections before further flight | For airplanes listed in TCDS A2PC: Follow MHI MV-2 Service Bulletin No. 234, dated October 7, 1998. For airplanes listed in TCDS A10SW: Follow MHI MV-2 Service Bulletin No. 097/73-001, dated July 24, 1998. |
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.
