COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Embraer EMB-110 (Bandeirante) Series Aeroplanes AD/EMB-110/21 Fuel Filter Drain Hose - Replacement 2/83 Applicability: All models EMB-110. Document: Embraer SB No. 110-28-024. Note: Brazilian CTA AD 82-10-01 refers. Compliance: Within 100 hours time in service after 28 February, 1983. Background: Existing fuel filter drain hoses are to be replaced with rigid tubes in order to minimise the possibility of failure. Such a failure could lead to the draining of the aircraft fuel tanks.