COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F100 (F28 Mk 100) Series Aeroplanes AD/F100/35 Elevator Tension Regulator Assembly 11/99 Applicability: Model F.28 Mk. 0070 aircraft, serial numbers 11562, 11565 through 11572, 11575 through 11583, and 11585; and Model F.28 Mk. 0100, serial numbers 11496 through 11518. Requirement: Visually inspect the elevator gustlock counter bracket attachment bolts in accordance with Part 2. Accomplishment Instructions of STORK Fokker Service Bulletin F100- 27-076, dated July 1, 1999. Note: RLD AD 1999-094 refers. Compliance: Before 4 December 1999, unless already accomplished. This Airworthiness Directive becomes effective on 4 November 1999. Background: The RLD received a report of an incident where during a routine landing the flight crew could not move the control column to its fully aft position. Subsequent investigation revealed that one of three bolts which attach the elevator gustlock counter bracket to a pulley of the elevator tension regulator assembly, had come loose. This Directive requires a one-time inspection of the affected parts on a limited number of aircraft that were manufactured after a certain change in the production process.