COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES SAAB SF340 Series Aeroplanes AD/SF340/10 Fuel System Optical Sensor Bonding 8/88 Applicability: SAAB SF 340 aircraft S/No's -004 through -106. Requirement: Action in accordance with SAAB Service Bulletin SF340-28-006. Note: Swedish Airworthiness Directive SAD No 1-025 refers. Compliance: Prior to 6 October 1988. Background: SAAB have advised that they have discovered that in some aircraft the fitting of a jumper assembly on the mid level and tank full optical sensors has been omitted. If not corrected, this could create a hazardous situation if a lightning strike occurs.