Commonwealth legislation

AD/DH 82/9 Amdt 1 - Datum Bolts

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legislative instrument

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This airworthiness directive requires operators of DH82 and DH82A Tiger Moth aeroplanes to inspect specific fuselage ‘datum’ bolts at joint E and replace them if they are the obsolete specification. It directs compliance with British Aerospace Technical News Sheet CT (Moth) No. 28 Issue 2 and must be done within 25 hours time-in-service after 10 September 1998 or by 10 December 1998. Amendment 1 adds a one-time inspection on the opposite side and permits using A25 bolts instead of obsolete AGS.749 bolts.

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AD/DH 82/9 Amdt 1 - Datum Bolts

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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DH 82 (Tiger Moth) Series Aeroplanes

AD/DH 82/9

Amdt 1

Datum Bolts 10/98

Applicability: Model DH82 and DH82A Moth aircraft.

Requirement: Action in accordance with British Aerospace Technical News Sheet CT (Moth) No.

28 Issue 2.

Note: UK CAA AD 002-10-97 refers.

Compliance: Unless already accomplished, within 25 hours time in service after 10 September 1998, or before 10 December 1998, whichever occurs first.

This amendment becomes effective on 10 September 1998.

Background: Moth aircraft have special bolts installed at certain fuselage joints which serve as “datum pins” when rigging the aircraft longitudinally. Although these bolts are similar in appearance, their material specifications differ. This Directive requires an inspection of the bolts installed at joint “E” (on some models) to determine the material specification.

Amendment 1 is issued in response to Issue 2 of the Requirement document which introduces an additional one-time inspection and replacement, where necessary, of the fuselage Joint ‘E’ bolts on the opposite side of the aircraft to the datum bolts, and to allow the use of A25 bolts in lieu of obsolete specification AGS. 749 bolts.

The original issue of this airworthiness directive became effective on 12 November 1997.

Source text

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

1 AD/DH 82/9 Amdt 1 - Datum Bolts