Commonwealth legislation

AD/B747/275 - Thrust Reverser Inspections, Modifications and Tests

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

5/10 complexity

This Airworthiness Directive requires installation of TRAS locks on Boeing 747 thrust reversers and sets inspections, tests, temporary dispatch limits, and terminating actions. It affects aircraft operators, maintenance organisations and certificating authorities: operators pay for parts and work, may temporarily dispatch an aeroplane with one deactivated reverser under their approved MEL (Spares), must reinstall a compliant assembly within 10 days, and follow the prescribed inspection and interval requirements until termination (Terminating Action).

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Current sections

Direct links to the current provisions in AD/B747/275 - Thrust Reverser Inspections, Modifications and Tests.

Spares

If, after incorporation of the modification required by Requirement 1(b) of this Directive, it becomes necessary to install a thrust reverser assembly that does not have the TRAS locks installed, the aeroplane may be dispatched in accordance with the conditions and limitations specified in the MEL approved for that aeroplane by registration mark, provided that the thrust reverser assembly that does not have the TRAS locks installed is deactivated in accordance with approved maintenance data.

No more than one thrust reverser on any aeroplane may be deactivated under the provisions of this paragraph. Within 10 days after deactivation of the thrust reverser, install a thrust reverser assembly that has the TRAS locks installed, reactivate the thrust reverser and functionally test in accordance with the appropriate approved maintenance data. Repair in accordance with the procedures specified in the appropriate approved maintenance data if any discrepancy is detected while carrying out the tests.

Terminating Action

Accomplishment of the actions contained in Requirement 1(b) terminates the repetitive inspections required by Requirement 1(a) and 5 of this AD.

Accomplishment of the installation specified in Boeing SB 747-78-2150, dated 20 March, 1997, terminates the requirement to comply with the installation contained in Requirement 1(b) of this AD.

Note: FAA AD 2000-14-11 Amdt 39-11821 refers

Compliance: For Requirement 1(a) OR (b): Prior to the issue of a Certificate of Airworthiness.

For Requirement 2: At intervals not exceeding 1,500 flight hours until accomplishment of Requirement 1(b).

For Requirement 3: Within 3,000 flight hours after accomplishment of Requirement 1(b) modifications.

For Requirement 4(a): At intervals not exceeding 3,000 flight hours. For Requirement 4(b) and (c): Prior to further flight.

For Requirement 5: Prior to the issue of a Certificate of Airworthiness.

For Requirement 6: At intervals not exceeding 18 months until accomplishment of Requirement 1(b).

For Requirement 7(a) or (b): Prior to further flight.

For Requirement 7(c): Within 10 days after thrust reverser deactivation in accordance with the provisions of Requirement 7(b).

For Requirement 7(d) and (e): Prior to further flight.

This Airworthiness Directive becomes effective on 11 July 2002.

Source text

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

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