AD/B767/121 - Strut Side Load Underwing Fitting Bolts (Cth)

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

Boeing 767 Series Aeroplanes

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/B767/121 Strut Side Load Underwing Fitting Bolts 7/2000 TX

Applicability: Model 767 series aircraft, line numbers 1 through 230 inclusive.

Requirement: 1. Perform a one-time inspection of the tension bolts in the side load underwing fittings on both struts to determine whether tension bolts made of H-11 steel are installed, in accordance with Boeing Alert Service Bulletin (ASB) 767-57A0074, dated 17 May 2000, or Revision 1, dated 18 May 2000.

If the inspection shows conclusively that no H-11 steel bolt is installed, no further action is required by this Directive.

2. If any H-11 steel bolt is found during the Requirement 1 inspection, or if the type of bolt cannot be determined, before further flight, perform an ultrasonic inspection to detect cracking or fracturing of the tension bolts in the side load underwing fittings on both struts, in accordance with Boeing ASB 767-57A0074 or ASB 767-57A0074 Revision 1.