Commonwealth legislation

AD/MU-2/48 - Rudder Trim Tab

In ForceCTH

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Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

Requires modifying the rudder trim tab leading edge on specified Mitsubishi MU-2 aeroplanes to prevent the trim tab contacting the rudder when full opposite rudder and trim are applied during single‑engine operation. It references Japan CAB AD TCD‑3378‑90 (MHI SB 211).

Operators of listed serial numbers must complete the modification within 100 flight hours after 28 Feb 1991 or by 20 May 1991, whichever is earlier. The rule mandates a physical control‑surface change and imposes a short compliance window.

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AD/MU-2/48 - Rudder Trim Tab

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Mitsubishi MU-2 Series Aeroplanes

AD/MU-2/48 Rudder Trim Tab 4/91 DM

Applicability: Model MU-2B/-10/-15/-20: S/N 008 through 211. Model MU-2B-30: S/N 502 through 542.

Model MU-2B-36: S/N 501.

Requirement: Action IAW the technical requirements of Japan CAB AD TCD-3378-90.

Note: MHI SB 211 refers.

Compliance: Within 100 hours time in service after 28 February 1991 or prior to 20 May 1991; whichever occurs first.

Background: A field report revealed that the rudder trim tab could interfere with the rudder trailing edge when full right rudder and full left rudder trim are applied at the same time during single engine operation. To preclude future occurrence of this condition, the trim tab leading edge requires modification.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.