Commonwealth legislation

AD/TB20/30 - Fuel Tank Internal Ribs

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This directive requires owners/operators of specified Aerospatiale (Socata) TB20 serial-numbered aircraft to have fuel-tank internal rib drain holes inspected and cleared per Socata Mandatory Service Bulletin 10.084.57, within 100 flight hours after 2 March 1995 or by 31 December 1995, whichever is earlier. It responds to sealant‑blocking of drain holes, imposes a one‑off inspection/repair cost and scheduling burden, and is enforced by the Civil Aviation Safety Authority.

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AD/TB20/30 - Fuel Tank Internal Ribs

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/30 Fuel Tank Internal Ribs 3/95

Applicability: TB aircraft serial numbers 1038 through 1442, 1444 through 1462, 1464 through

1581, 1583 through 1606, 1608 through 1619, and 1629; and aircraft serial numbers 1 through 1037 on which the tank rib has been repaired since the application of modification No.78.

Requirement: Action in accordance with Socata Mandatory Service Bulletin 10.084.57.

Note: DGAC AD 94-247(A) refers.

Compliance: Within 100 hours time in service after 2 March 1995 or prior to 31 December 1995, whichever occurs first.

Background: Tank sealant has been found obstructing the fuel tank internal rib drain holes. This Directive requires fuel tank internal inspections to ensure the necessary drain holes are clear.

Source text

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

1 AD/TB20/30 - Fuel Tank Internal Ribs