Commonwealth legislation

AD/MU-2/71 - Wing Attachment Barrel Nuts and Bolts

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires operators of specified Mitsubishi MU-2 aircraft to inspect the wing attachment barrel nuts and bolts, correct torque values, and carry out any repairs in accordance with Mitsubishi Service Bulletin No. 241A (or later JCAB-approved revisions). It was issued after reports of fractured barrel nuts and discovery of incorrect bolt torque. Owners and operators of the listed MU-2 models/serial ranges must comply within the stated flight-hours or months; CASA enforces the requirement.

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Current sections

Direct links to the current provisions in AD/MU-2/71 - Wing Attachment Barrel Nuts and Bolts.

Mitsubishi MU-2 Series Aeroplanes

AD/MU-2/71	Wing Attachment Barrel Nuts and Bolts	3/2007

Applicability:	Model MU-2B-10, -15, -20, -25, -26 aircraft, serial numbers 101 through 347, except serial numbers 313 and 321.Model MU-2B-30, -35, -36 aircraft, serial numbers 501 through 696, except serial numbers 652 and 661.
Requirement:	Action in accordance with Mitsubishi Service Bulletin No. 241A dated21 November 2006 or later JCAB approved revisions.Note: JCAB AD TCD-7030-2006 refers.
Compliance:	Within 200 hours time in service or 12 months after 15 March 2007, whichever occurs first.
	This Airworthiness Directive becomes effective on 15 March 2007.
Background:	The manufacturer received a report of several fractured wing attachment barrel nuts that were detected during routine maintenance. During a subsequent field survey, no additional cracked barrel nuts were detected, but a significant number of aircraft were found to have incorrect torque values on the wing attachment bolts.

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David Villiers
Delegate of the Civil Aviation Safety Authority

1 February 2007

AD/MU-2/71

Wing Attachment Barrel Nuts and Bolts

3/2007

Source text

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

Mitsubishi MU-2 Series Aeroplanes Mitsubishi MU-2 Series Aeroplanes

Mitsubishi MU-2 Series Aeroplanes

AD/MU-2/71	Wing Attachment Barrel Nuts and Bolts	3/2007

Applicability:	Model MU-2B-10, -15, -20, -25, -26 aircraft, serial numbers 101 through 347, except serial numbers 313 and 321.Model MU-2B-30, -35, -36 aircraft, serial numbers 501 through 696, except serial numbers 652 and 661.
Requirement:	Action in accordance with Mitsubishi Service Bulletin No. 241A dated21 November 2006 or later JCAB approved revisions.Note: JCAB AD TCD-7030-2006 refers.
Compliance:	Within 200 hours time in service or 12 months after 15 March 2007, whichever occurs first.
	This Airworthiness Directive becomes effective on 15 March 2007.
Background:	The manufacturer received a report of several fractured wing attachment barrel nuts that were detected during routine maintenance. During a subsequent field survey, no additional cracked barrel nuts were detected, but a significant number of aircraft were found to have incorrect torque values on the wing attachment bolts.

AD/MU-2/71 - Wing Attachment Barrel Nuts and Bolts

Plain English Summary

Deep dive

Current sections

Mitsubishi MU-2 Series Aeroplanes

Mitsubishi MU-2 Series Aeroplanes

AD/MU-2/71

AD/MU-2/71

Wing Attachment Barrel Nuts and Bolts

Wing Attachment Barrel Nuts and Bolts

3/2007

3/2007

Source text

Mitsubishi MU-2 Series Aeroplanes Mitsubishi MU-2 Series Aeroplanes

Mitsubishi MU-2 Series Aeroplanes

AD/MU-2/71 AD/MU-2/71

AD/MU-2/71

Wing Attachment Barrel Nuts and Bolts Wing Attachment Barrel Nuts and Bolts

Wing Attachment Barrel Nuts and Bolts

3/2007 3/2007

3/2007