COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Grob G115 Series Aeroplanes AD/GROB 115/11 Aileron Control Rod 7/98 Applicability: Model G115 and G115A, all serial numbers. Requirement: Replace aileron control rods no. 1 (part number 115-4400/4401) with modified aileron control rods no. 1 (part number 115-4410/4411) in accordance with Grob Service Bulletin (SB)1078-14. Note 1: LBA AD 90-229 refers. Note 2: Aileron control rods (part number 115-4400/4401) removed from aircraft or in storage should be rendered unserviceable or destroyed. Compliance: Unless already accomplished, replace within 20 hours time in service after 18 June 1998. This airworthiness directive becomes effective on 18 June 1998. Background: Application of high control forces can distort the aileron control rod no. 1 (part number 115-4400/4401), interfering with proper control of the aircraft. This directive requires installation of a modified control rod with an additional stop to prevent damage during operation.