SkyWest plane makes unscheduled stop at Provo Municipal Airport (KPVU), Utah.

PROVO -- A small commercial jet descended out of the clear, bleach-blue skies over Utah Valley Friday afternoon to make an unscheduled stop at the Provo airport.

The SkyWest airplane -- which was en route from Ontario, Calif., to Salt Lake City -- landed shortly before 1 p.m., according to officials. SkyWest spokeswoman Marissa Snow said that the landing was prompted by the activation of an indicator light related to the plane's oil. The landing was a precautionary measure and was never declared an emergency, Snow said.

Fifty people were onboard, Snow added, and none of them left the plane during the stop in Provo. After about an hour of maintenance on the tarmac, the plane taxied to the far end of the runway near a wooded hill, exhaust from the engines sending up swirling heat signatures. A pair of private, two-seater planes took off, a third small plane landed. Then at 1:44 p.m. the SkyWest flight lifted into the air and headed for Salt Lake City.

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