Commonwealth legislation

AD/DHC-3/31 - Control Column Cracking

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

If you own or operate a DHC‑3 (Otter), this directive requires you to follow Havilland Canada SB 3/39 Rev B: carry out the prescribed inspections and corrective work before initial Certificate of Airworthiness and whenever specified adverse wind exposure occurs. It responds to reported cracks at the base of the control column from ground gust loading. Owners/operators bear compliance costs and may need to change parking or maintenance practices.

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AD/DHC-3/31 - Control Column Cracking

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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-3 (Otter) Series Aeroplanes

AD/DHC-3/31 Control Column Cracking 13/87

Applicability: All models.

Requirement: Action in accordance with the Havilland Canada SB 3/39 Rev B.

Compliance: In accordance with the criteria listed in the Requirement Document but prior to the issue of an initial Certificate of Airworthiness.

Note 1. Canadian AD CF-82-34 refers.

Note 2. An inspection is required whenever a parked aircraft is subjected to the adverse wind conditions descried in the Requirement Document.

Background: There have been reported cracks in the lower welded assembly at the base of the control column. The cracking is attributed to ground gust loading of the elevator surfaces.

Source text

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