COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 125 Series Aeroplanes AD/HS 125/108 Flap Inboard Hinge 8/90 Applicability: As listed in the Requirement Document. Requirement: Action in accordance with Hawker Siddeley SB 27-112. Compliance: In accordance with the Requirement Document. Background: This Directive is to reduce the possibility of flap damage when landing on heavily watered or slush covered runways.