Incident at GREATER MONCTON ROMEO LEBLANC INTERNATIONAL AIRPORT (TCAS alert)

Summary

2003-03-26: TSB Update - 2003/03/25 - A03A0035: JZA8880, an IFR DHC8 arriving at Moncton from Montreal was on a visual approach to Runway 06, and C-GTDI, a C172, was also arriving at Moncton on a VFR flight from Fredericton; both aircraft were in VMC. Traffic information was being passed to both aircraft by the arrival controller. When the aircraft were approximately 4 nm apart, the C172 reported JZA8880 in sight and the C172 was then instructed to pass behind the other aircraft. JZA8880, which was in descent for the approach, was advised of this. At 4600 feet JZA8880 levelled off because visual contact had not been gained with the other aircraft, and its TCAS indicated the C172 to be closing and climbing toward them. TCAS contact was also intermittent. The captain of JZA8880 then elected to begin a climb and slight turn to the right away from the C172. Shortly after this, the crew had a traffic advisory (TA); the C172 was about 300 feet below and slightly to the left. This advisory was followed by a resolution advisory (RA) to climb, which was already underway. JZA8880 then saw the C172 and estimated that the aircraft passed to the left at less than one nm. Nav Canada has assessed the distance between aircraft to have been approximately 1.5 nm.
2003-03-18: An IFR Dash8 from Montreal was on a visual approach to Runway 06 in Moncton. At the same time a Cessna 172 was departing the Moncton airport and was VFR to Fredericton. Traffic information was being relayed to both aircraft. When the aircraft were 4 miles apart the C172 reported the DHC8 in sight and was instructed to pass behind. The C172 was complying with this instruction. The DHC8 was advised that the C172 had him in sight. Shortly after, the DHC8 was observed to climb to 5300 ft and then the aircraft advised he was following a TCAS alarm to climb. At that time, neither aircraft had turned and both aircraft had the other at its 9 o'clock position, proceeding in opposite directions, approximately 1 and 1/2 miles apart.

Details


CADORS Number 2003A0172
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-03-16 - 16:45
Day or Night? Day-time
Fatalities 0
Injuries
Aerodrome ID CYQM
Aerodrome Name GREATER MONCTON ROMEO LEBLANC INTERNATIONAL AIRPORT
Geographic Location New Brunswick, Canada, North America, Atlantic Region,
TSB Occurrence Number A03A0035
TSB Class of Investigation Class 5
AOR Number 28165
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions
Events TCAS alert


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