COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Pilatus PC-12 Series Aeroplanes AD/PC-12/8 Amdt 1 Executive Cabin Layout 9/98 Applicability: Lavatory Wall Modification: All PC-12 and PC-12/45 aircraft, MSN 101 up to and including MSN 180, which have an executive cabin layout. Passenger Seat Configuration Modifications: All PC-12 and PC-12/45 aircraft, MSN 101 up to and including MSN 171, which have an executive cabin layout. Requirement: Modify in accordance with Pilatus Aircraft Service Bulletin (SB) 25-003 Revision 1. Note: FOCA Switzerland AD HB 97-249A refers. Compliance: Unless already accomplished in accordance with SB 25-003, before 13 September 1998. This amendment becomes effective on 13 August 1998. Background: In order to comply with the Head Injury Criteria requirements of FAR 23.562 (c)(5), this Directive requires modification of the executive cabin type layout. Amendment 1 is issued in response to revision of the FOCA AD which introduces a revised Requirement document which clarifies certain requirements. The original issue of this airworthiness directive became effective on 2 July 1997.