1AD/F100/18 - MLG Sliding Member Wheel Axle

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Fokker F100 (F28 Mk 100) Series Aeroplanes

AD/F100/18 MLG Sliding Member Wheel Axle 4/99

Applicability: F.28 Mk.0100 aircraft, all serial numbers, if equipped with Dowty Main Landing Gear Part Number (P/N) 201072011, 201072012, 201072013, 201072014,

201072015, or 201072016.

Requirement: Accomplish either one of the following:

Visually inspect the sliding members of all affected main landing gears installed on in-service aircraft for the presence of corrosion on the wheel axles in accordance with Fokker Service Bulletin (SB) F100-32-080, dated 4 October 1993, and in accordance with Dowty Aerospace SB F100-32-64, dated 23 September 1993; or,

2. Rework the axles in accordance with paragraph 2.B Part B of Dowty Aerospace SB F100-32-64 Revision 1 dated 18 February 1994; prior to, or at the same time of the rework of the axles, the main wheel brake units must be replaced in accordance with ABS Corporation SB Fo-100-57 Revision 1.

Note 1: Aircraft that were on a sampling program (which expired on 1 January 1999) in conjunction with Requirement 2 actions in accordance with Fokker SF F100-32-083, are now required to introduce the Requirement 1 inspections.

If corrosion is found during the Requirement 1 inspection, before further flight, rework the affected area and perform a Non-Destructive Testing (NDT) inspection for cracks in accordance with Appendix A of Dowty Aerospace SB F100-32-63 dated

29 July 1993, or in accordance with Appendix A of Dowty Aerospace SB F100-32-64 dated 23 September 1993.

Note 2: The rework specified in the paragraph immediately above does not constitute terminating action for the Requirement 1 repetitive inspection requirement.

If cracks are detected during any inspection required by this Directive, before further flight, replace the affected sliding member with a serviceable part in accordance with applicable maintenance procedures.

Note 3: Replacement of the sliding member does not constitute terminating action for the repetitive inspection requirements of Requirement 1 of this Directive, unless the replacement part is in post Fokker SB F100-32-081 configuration.

Note 4: RLD BLA 93-108/3(A) refers.

Compliance: 1. Within three calendar months after the last inspection, or one calendar month after 22 April 1999, whichever occurs later; thereafter at intervals not to exceed three calendar months, until the requirements specified in the compliance note below are met.