COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Aerospatiale GY 80 (Horizon) Series Aeroplanes
AD/GY80/1 Fuel System - Inspection and Modification 10/69
Applicability: All models with S/Nos. prior to No. 125.
Requirement: 1. Inspect the fuel supply lines from each wing tank where they pass through the wing-root/fuselage structure for any evidence of chafing. If chafing has occurred replace the affected pipes.
2. In the region where the fuel supply lines pass through the wing-root and fuselage structure, protect the pipes against possible chafing by means of a suitable piece of split rubber hose secured around the pipe in the critical area; or
3. Sud Aviation SB No. 28. Compliance: 25 November 1969.