1AD/DH114/29 Amdt 1 - Main Undercarriage - Main and Damper Jack Bolts - Inspection and Modification

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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DH114 (Heron) Series Aeroplanes

AD/DH114/29

Amdt 1

Main Undercarriage - Main and Damper NK Jack Bolts - Inspection and Modification

Applicability: All Series 2 aircraft.

Requirement: Inspect the attachment bolts at each end of the damper jack and at the top of the main jack for fatigue cracking as follows:

For aircraft fitted with attachment bolts P/No. 14-2U.299:-

(a) Remove the bolts and inspect for cracking around the centre grease hole using a magnetic particle method.

(b) Incorporate Modification No. 1536.

2. For aircraft fitted with attachment bolts P/No. 14-2U.631:-

Remove the bolts and inspect for cracking around the centre grease hole using a magnetic particle method.

Compliance: For Para. 1:

(a) For aircraft inspected in accordance with the previous issue of this Directive \- within 300 hours time in service from the previous inspection; and

For all other aircraft - within 150 hours time in service after 31 May 1972; and

For all other aircraft - thereafter at intervals not exceeding 300 hours time in service.

(b) Before 31 December 1972\. For Para. 2:

Within 2400 hours time in service after the incorporation of modification 1536 and thereafter at intervals not exceeding 2400 hours time in service.