COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Gulfstream (Grumman American/ American Aviation) AA-5 Series Aeroplanes
AD/AA-5/6 Fuel Tank Vent Lines - Modification NK
Applicability: All models.
Requirement: 1. Replace all PVC plastic hose connectors on the fuel tank venting system with fuel resistant rubber hose connectors.
2. Where practicable, bead the ends of the aluminium alloy vent lines where joined by hose connectors.
3. Ensure that the end distance between adjoining aluminium alloy vent lines in hose connectors is no greater than 1/2".
4. Replace all spring wire type hose clips on the fuel tank venting system with screw type hose clips.
Compliance: Within 100 hours’ time in service after 31 August 1973.