WOODSIDE (CBS/AP) — The California Highway Patrol Monday released a few more details about the emergency landing of a small aircraft on northbound Interstate Highway 280 on Sunday.

The pilot, Scott Bohannon, 53, of San Mateo, was forced to land on the highway north of Farm Hill Boulevard after the plane suffered a mechanical failure, according to the CHP.

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Bohannan had taken off from the San Carlos Airport on a test flight and was on his way back when the mechanical failure occurred, CHP Officer Art Montiel said. Bohannon radioed the airport as he was landing.

The CHP began to receive reports at 7:13 p.m. that a small aircraft had landed on the highway. As officers were responding, the airport also contacted the CHP about the incident.

The plane’s landing gear struck the roof of a 2009 Mercedes coupe driven by Wendy Kwon, 47, of Sausalito, that was also traveling north directly below the landing aircraft, CHP officials said.

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Kwon was alone in the car. The rear window of the car was broken, the roof was dented and the car was towed away from the scene, but there were no injuries.

The plane, a 1975 Cessna, landed safely and was able to come to a stop on the highway’s shoulder. Traffic was light and was only moderately affected. The plane was towed to the airport.

Federal Aviation Administration spokesman Allen Kenitzer said the plane was conducting a photo mission when it lost engine power.

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