COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 550 (Citation II) Series Aeroplanes
AD/CESSNA 550/13 Bleed Air Check Valve 9/86
Applicability: All model 550 with unit numbers -0002 to -0505, and All model S550 with unit numbers -0001 to -0034.
Requirement: Inspect and modify in accordance with Cessna Service Bulletins S.B. 550-36-2 and S.B. S550-36-1.
Compliance: At the next scheduled maintenance period or phase inspection after 30 September 1986.
Background: The existing valves have experienced malfunctions and have been replaced by a modified valve.