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 550/22 Outflow Safety Valve 5/96
All Cessna 550 series aircraft.
Unless previously carried out, action in accordance with Allied Signal Service Bulletin 103576-21-4056.
FAA AD 95-25-10 Amdt 39-9456 refers.
Within 200 hours time in service from 25 April 1996 or prior to 31 July 1996, whichever occurs first.
The manufacturer has advised that cracking has been found in two valve poppets of a particular batch. This cracking may cause failure of the outflow safety valve which could result in rapid decompression of the aircraft.