Incident
at VANCOUVER INTL BC (CYVR)
(TCAS alert, Overshoot/missed approach, Conflict - potential)
Air Canada Embraer E190 flight ACA297, IFR Winnipeg to Vancouver, at 8NM on final approach to runway 26R, was passed traffic regarding Canadian Helicopters Bell B06 (C-FCQE), VFR origin and destination unknown conducting a low level (500 feet and below) pipeline patrol in the vicinity of the 26R approach. ACA297 advised traffic observed on TCAS. ACA297 reported a resolution advisory at 5NM final and executed a missed approach. Approximately 5 seconds prior, the north tower controller observed the Mode C readout of B06 increase from 300 feet to 600 feet then return to 300 feet instantly. ACA297 landed runway 26R at 2149Z
UPDATE from Commercial & Business Aviation: The Canadian Helicopters' pilots were conducting their weekly pipeline patrol on the Vancouver Jet Line from Burnaby Mountain to Vancouver (CYVR), and were cleared to east bound from the Jet Fuel tanks between Runway 26R and 26L. At approximately 5 NM east of the airport the B06 descended to 300 feet to provide better separation for the overflying jets, passing 2 jets on final to Runway 26R with no problems. The aircraft was under control of the Outer Tower and was requested to slow down to allow the Air Canada Embraer at about 1500 ft at this point to pass overhead. Normal operations is to proceed underneath at that point, but the controller had asked the B06 to wait. Once ACA297 was by, the B06 proceeded through the approach of Runway 26R. Once in the Vancouver Harbour zone, the B06 received a call advising there was a problem with their transponder in CYVR. The controller was not aware of the problem and asked they turn off Mode C while in his zone. Upon arrival at Pitt Meadows the B06 turned on the transponder, requested a new code and a transponder check, and everything was correct and accurate. There were no other problems from Langley, Abbotsford, Kamloops, or Edmonton since then. Transponder check was completed on arrival in Edmonton and no problems were found. It will continue to be monitored.