Rescue Co-ordination Centre spokesman Capt. Pat McSorley says the primary search area remains focused just north of Kamloops Lake, only a few kilometres west of Kamloops.
He says a signal from the Cessna 172 has not been picked up, which could mean the device has failed to function or it might have been destroyed if the single-engine craft crashed in a certain way.
A 17-year-old flight school student is the lone person aboard.
He was reported overdue at about noon Tuesday after failing to return to the Kamloops airport following a routine solo flight.
Officials describe the teen as an experienced student, with more than 60 hours of flight time and all the necessary training required by Transport Canada. (CHNL)
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