Commonwealth legislation

AD/DHC-6/7 Amdt 1 - Elevator Rear Spar - Inspection and Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Applies to De Havilland DHC‑6 (Twin Otter) aeroplanes S/N 1–105: operators must inspect the elevator rear spar per Mod. Bulletin 6/1134 at intervals not exceeding 50 hours TIS until they complete the one‑time modification required by Mod. Bulletin 6/1135.

This mandates owner/operator/maintenance action before 1 April 1968, imposing recurring inspection costs and scheduling burdens until the modification removes the short‑interval inspection requirement.

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AD/DHC-6/7 Amdt 1 - Elevator Rear Spar - Inspection and 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 DHC-6 (Twin Otter) Series Aeroplanes

AD/DHC-6/7

Amdt 1

Elevator Rear Spar - Inspection and Modification

1/68

Applicability: All Models With S/Nos. 1 To 105.

Document: De Havilland Of Canada Mod. Bulletins 6/1134 And 6/1135.

Compliance: Inspect In Accordance With Mod. Bulletin 6/1134 At Intervals Not Exceeding 50 Hours Time In Service Until Modified To Bulletin 6/1134 Or 6/1135. Modify In Accordance With Mod. Bulletin 6/1135 Before 1 April 1968.

Source text

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