Commonwealth legislation

AD/TB20/20 - Horizontal Stabiliser Balance Weight

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD orders a mandatory inspection, per Alert Service Bulletin 57, of the horizontal stabiliser balance weight attachment on Socata TB20/TB21 aeroplanes (serials 1–1030) to verify the attaching nuts meet safety dimensions. Operators must arrange and pay for the inspection within 25 hours TIS of 13 Feb 1991. The measure aims to prevent weight detachment and the resulting dangerous flutter; following the referenced service bulletin is required.

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AD/TB20/20 - Horizontal Stabiliser Balance Weight

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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 Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/20 Horizontal Stabiliser Balance Weight 4/91 DM

Applicability: Model TB20 and TB21 series with serial numbers 1 through 1030. Requirement: Action in accordance with Alert SB 57.

Compliance: Within 25 hours time in service after 13 February 1991.

Background: This Directive requires an inspection to determine whether both attaching nuts of the horizontal stabilizer balance weight are within the required safety dimension.

Detachment of balance weight may lead to a dangerous flutter condition.

Source text

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