Incident at Calgary, AB


1999-02-17: ACA 214, an A320, was inbound to Calgary after a flight from Vancouver, and the crew was cleared for a straight-in ILS approach to Runway 16 via FMS STAR "Ubton" then "Elero". The a/c was observed descending to 7,100 feet ASL at Ubton, which is 400 feet below the altitude depicted on the STAR, then descending to 4,800 feet at Elero, which is 2,000 feet below the chart altitude. When questioned, the Captain responded that the a/c was at the correct altitude. NavCanada indicated that the a/c was 1,400 feet below the Minimum Radar Vectoring Altitude for Calgary Terminal Control Unit. OPI - Enforcement UPDATE TSB reported that radar data indicates that the crew crossed the Ubton fix at 7,500 feet and then descended to 5,700 feet, or 1,100 feet below the chart minimum altitude. The crew intercepted the localizer and continued to descend to 5,000 feet where they levelled until reaching the glideslope. The chart minimum altitude depicted for the ILS prior to glide slope intercept is 5,000 feet. Weather at the time of the occurrence was good VFR. The Captain had decided to conduct the NDB approach to the runway so that he could show the First Officer some of the problems they had encountered with tracking in the flight simulator. The Captain did not advise ATC of his intentions before descending below the minimum specified altitude for the FMS Handa 3 arrival. There were no other a/c involved and there was no risk of collision.


CADORS Number 1999C0086
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-02-03 - 23:30
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Calgary, AB
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories Other

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Operator Commercial
Make  Silhouette image of AIRBUS
Model  Silhouette image of A319 114
A319 114
Year Built
Engine Type Turbo fan
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number ACA 214
Flight Rule
CARS Subpart
Phase of Flight Approach
Damage Unknown
Fatalities 0
Injuries 0
Events Alleged Canadian Aviation Regulations (CARs) infraction

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