Commonwealth legislation

AD/TB20/4 - Wing Drainage - Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD mandates that owners/operators of SOCATA TB20 aeroplanes (S/Ns up to 433 and S/No 444) carry out the Service Bulletin No. 26 wing tip forward spar box modification within 50 hours TIS after 8 March 1985. It’s required to provide proper drainage, reduces corrosion risk, and is carried out and funded by the aircraft owner/operator.

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AD/TB20/4 - Wing Drainage - Modification

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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/TB20/4 Wing Drainage - Modification 4/85 DM

Applicability: All model TB20 with S/Nos up to 433 and No 444. Requirement: Aerospatiale SOCATA TB SB No. 26.

Compliance: Unless already accomplished, within the next 50 hours time in service after 8 March 1985.

Background: The purpose of this modification is to provide proper drainage of the wing tip forward spar box.

Source text

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