Federal Register of Legislation
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES
Airtractor AT-300, 400 and 500 Series Aeroplanes
AD/AT/3 Amdt 5
Landing Gear 4/97
Applicability: All models fitted with main landing gear spring legs P/N 40007-2/-3, 40058-1/-2 and 40086-1.
Requirement: Retire the main landing gear spring legs, the forward and aft main gear clamp block bolts and the inboard main gear large bolt.
Note: Snow Engineering Service Letters #117, #119 and FAA AD 82-06-12 refer.
Compliance: Retire the main landing gear spring legs at the number of landings listed in Table 1. At the same time, retire the forward and aft main gear clamp block bolts and the inboard main gear large bolt.
If, during initial compliance with this directive, any or all of the components listed in the above Requirement are found to be outside the Table 1 lives, replace those components within 500 landings after 27 March 1997, or by 30 June 1997, whichever occurs first.
Table 1 - Spring Retirement Lives
Spring Part # Thickness (in) Aircraft Fitted Retire at every (#LDGs) 40007-2 1.0 AT-300, -301 7500 40007-2 1.0 AT-302, -400A 6000 40058-1 1.0 AT-300, -301 7500 40058-1 1.0 AT-400, -400A 6000 40058-2 1.19 AT-400, -402, -402A, -402B 10000 40058-2 1.19 AT-301, -400A, -401, -401B 12500 40007-3 1.12 AT-301, -401, -401B 12500 40086-1 1.31 AT-501, -502, -502A, -502B, -503A 8000
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