Commonwealth legislation

AD/STRIKEMASTER/4 - Port and Starboard Mainplane Spar Upper Attachment Lugs

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This directive requires mandatory inspections of the upper wing attachment lugs on BAC 167 Strikemaster jets because detected cracks could lead to catastrophic wing failure. It applies to owners/operators once aircraft reach the specified fatigue-index or flight-hour thresholds (including mod 7061) and following heavy landings or excessive G events.

Because reliable crack detection cannot be done with the wings fitted, operators must remove the wings and follow British Aerospace procedure CSI/STRIKEMASTER/50. Inspections are due initially and then every 150 flying hours.

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Current sections

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AD/STRIKEMASTER/4 - Port and Starboard Mainplane Spar Upper Attachment Lugs

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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BAe (BAC 167) Strikemaster Series Aeroplanes

AD/STRIKEMASTER/4 Port and Starboard Mainplane Spar

Upper Attachment Lugs

13/96

Applicability: BAC 167 all Mks:

pre mod 7061, which have achieved 15 F.I. or 1000 hours time in service, or post mod 7061, which have achieved 40 F.I.

Requirement: Inspect the port and starboard mainplane spar upper attachment lugs for cracking in accordance with BAe CSI/STRIKEMASTER/50.

Note: UK CAA MPD 1995-109 refers.

Compliance: At the next 150 flying hour Service after 5 December 1996, thereafter at intervals not exceeding 150 hours time in service, and at each heavy landing or excess “g” loading after 07 November 1996.

Background: Cracking has occurred in the lugs which cannot be reliably detected in-situ using the existing ultrasonic techniques. It is therefore necessary to remove the wings and use the technique specified in the Requirement Document.

Source text

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

1 AD/STRIKEMASTER/4 - Port and Starboard Mainplane Spar Upper Attachment Lugs