Incident at WHITEHORSE/ ERIK NIELSEN INTL (CYXY) (ATS operating irregularity)


2003-09-23: UPDATE TSB reported that the Air Canada Jazz British Aerospace 146-200, C-FBAO, was operating from Whitehorse, YT to Vancouver, BC as flight JZA 8501. The initial IFR clearance given to JZA 8501 by the Whitehorse Tower Controller included the cruising altitude of FL 250. The flight crew read back FL 270 and this error was not detected by the Tower Controller. JZA 8501 called the en route sector during climb out indicating that they were climbing to FL 270. The incorrect altitude was not detected by the Controller at that time, nor when JZ A8501 reported level at FL 270. When JZA 8501 contacted Vancouver Centre, the incorrect altitude was detected by the Controller. There were no losses of separation; however, safety was not assured.
2003-09-15: UPDATE ANS and Airspace reported that Nav Canada will hold an Operational Safety Investigation concerning this occurrence.
2003-09-11: The crew of JZA 8501, a BAe 146, received an IFR clearance from Whitehorse to Vancouver at FL 250. The pilot read back FL 270, which was missed by the Tower Controller. After departure, the crew contacted Edmonton ACC and reported climbing to FL 270, which was also missed by the En Route Controller. When the flight crew reported level at FL 270, the Controller did not notice the error. When the flight subsequently entered Vancouver ACC airspace, the error was identified as the data exchange between Centres was FL 250.


CADORS Number 2003C1297
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-09-11 - 01:10
Day or Night? Day-time
Fatalities 0
Aerodrome ID CYXY
Geographic Location Yukon, Canada, North America, Prairie and Northern Region, Between Whitehorse and Vancouver
TSB Occurrence Number A03W0195
TSB Class of Investigation Class 5
AOR Number 32317
Reported By NAV CANADA
Categories ATM/CNS
Events ATS operating irregularity

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