91-23-08: Rudder Trim Tab

91-23-08 MITSUBISHI HEAVY INDUSTRIES: Amendment 39-8077. Docket No. 91-CE-33-AD. Applicability: Models MU-2B-10, MU-2B-15, and MU-2B-20 airplanes (serial numbers (S/N) 008 through 211), Model MU-2B-30 airplanes (S/N 502 through 542), and Model MU-2B-36 airplanes (S/N 501), certificated in any category. Compliance: Required within the next 200 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent interference between the rudder and the rudder trim tab that could result in loss of control of the airplane, accomplish the following: (a) Modify the rudder trim tab in accordance with the instructions in Mitsubishi Heavy Industries Service Bulletin No. 211, dated November 20, 1990. (b) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (c) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Transport Airplane Directorate, 3229 E. Spring Street, Long Beach, California 90806-2425. The request should be forwarded through an FAA Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles Aircraft Certification Office. (d) The modification required by this AD shall be done in accordance with Mitsubishi Heavy Industries Service Bulletin No. 211, dated November 20, 1990. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Mitsubishi Heavy Industries, Nagoya Aerospace Systems, 10, Oyecho, Minato-Ku, Nagoya, Japan. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 1100 L Street, NW, Room 8401, Washington, DC. (e) This amendment (39-8077, AD 91-23-08) becomes effective on December 18, 1991.