Commonwealth legislation

AD/PC-6/43 - Aileron Attachment Bracket

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires owners/operators of Pilatus PC-6 Porter/Turbo Porter aeroplanes (serial numbers up to 815) to modify the aileron/flap attachment brackets in line with Pilatus Service Bulletin No. 138 Rev. 2. The work must be done within 100 hours time in service from 27 March 1997. The directive responds to discovered fatigue cracks in the angle brackets attributed to overspeeding and harsh high‑speed manoeuvring.

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AD/PC-6/43 - Aileron Attachment Bracket

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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 Pilatus Porter PC-6 Series Aeroplanes

AD/PC-6/43 Aileron Attachment Bracket 4/97

Applicability: Pilatus PC-6 Porter / Turbo Porter up to Serial No. 815

Requirement: Modify aileron/ flap mountings in accordance with Pilatus Service Bulletin (SB) No.

138, Rev. 2.

Note: Swiss FOA AD HB 84-023 refers.

Compliance: Unless already accomplished, within 100 hours time in service from 27 March 1997.

This Airworthiness Directive becomes effective on 27 March 1997.

Background: Cracks have been found in the angle brackets forming the attachment of the aileron flap mountings. The cracks have been attributed to fatigue caused by the aircraft being subjected to overspeeding and harsh manoeuvring of the aircraft at high speed.

Source text

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