Incident at Sydney


1999-07-05: N1218S C551 enroute Columbia to Sydney at 39,000 feet, changed transponder to 7700 and began a rapid descent due to decompression difficulties. Special handling or equipment was not required in Sydney . No other aircraft involved. Nil TSB Update action to read MAH. Update: Pilot reported that prior to starting the descent he had set the field elevation at 1000 feet and that the rate of change was set at 500 feet per minute. The pilot further reported that he suspects that the "Maximum Differential Pressure Valve" may have stuck in the open position resulting in the rapid depressurization. TSB File # A99A0088


CADORS Number 1999A0353
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-06-26 - 17:45
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Nova Scotia, Canada, North America, Atlantic Region, Sydney
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories System/component failure or malfunction [non-powerplant]

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Operator Private
Make  Silhouette image of CESSNA
Model 551
Year Built
Engine Type
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage Unknown
Fatalities 0
Injuries 0
Events Decompression/pressurization

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