COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Robinson R44 Series Helicopters AD/R44/11 Amdt 1 Cyclic Control Pilot's Grip Assembly 1/2000 Applicability: Model R44 helicopters, serial numbers 0001 through 0159, except 0143, 0150, and 0156, with cyclic control pilot's grip assembly, part number (P/N) A756-6 Revision N or prior, installed. Requirement: Remove the grip assembly, P/N A756-6 Revision A through N, and replace it with a serviceable grip assembly other than P/N A756-6 Revision A through N, in accordance with KI-112 R44 Pilot's Grip Assembly Upgrade Kit instructions, dated 20 December 1996. Note: FAA AD 99-23-01 Amdt 39-11397 refers. Compliance: Unless already accomplished, within 25 hours time in service after 23 November 1998, or before 23 December 1998, whichever occurs first. The compliance of the original issue of this Directive remains unchanged for this issue. This Airworthiness Directive becomes effective on 31 December 1999. Background: The FAA received a report of a crack in the welded corner of a grip assembly. The actions required by this Directive are intended to prevent use of a grip assembly that may crack, resulting in failure of the grip assembly and subsequent loss of control of the helicopter. Amendment 1 is issued in response to a new FAA AD which corrects an error in the specified part number of the grips affected. The original issue of this Airworthiness Directive became effective on 23 November 1998.