The Air Force is wrapping up its search for a 61-year-old pilot missing in British Columbia.

Ron Boychuk departed from Revelstoke en route to the Vancouver Island community of Qualicum 12 days ago, but never arrived.

"This has been a tragic event, which the air force was unfortunately unable to resolve," Capt. Brad White said in a release on Saturday. "We have no idea why Ron Boychuk disappeared or have any clues to his whereabouts.

"Our intention is always to bring home loved ones. It is with great sadness that we return without having reunited Ron Boychuk with his family."

More than 30,000 square kilometres have been searched so far.

Capt. Cheryl Condley of 19 Wing Comox said crews flew 580 hours looking for Boychuk's Cessna, but never spotted the aircraft.

The missing pilot's family has said he knew the route well and was well-prepared to survive a crash.

Weather conditions are poor for searching right now in the mountains. The crews reportedly have one more area to search when it improves, but the search headquarters in Kamloops has been closed.

The RCMP will take over the file as a missing person case.

New life, memorial in Alberta

A plane crash occurred in B.C. last Sunday, leaving a three-year-old girl, Kate Williams, the only survivor.

Her mother, Nancy Williams, has just gave birth to a son.

She has named the boy Allen after her father Allen Williams -- the pilot of the Cessna 172 that crash-landed outside Golden, B.C., and Kate's grandfather.

A memorial service will be held today at the aviation museum in Edmonton, with hundreds expected to attend, including Nancy and Allen.

Williams, 65, founded A.D. Williams Engineering Inc. He died along with Steven Sutton, the company's 49-year-old chief financial officer.

Rescuers at the crash scene found Kate hanging upside down. The girl escaped injury because her grandfather had strapped her into a car seat.

With files from The Canadian Press