24-yr-old American Pilot Steals Plane, Disappears Over Pacific Ocean (Photo)

A California flight instructor’s puzzling disappearance continues to baffle investigators 11 days after he stole a plane and vanished over the Pacific Ocean.

“It’s a mystery, and it will continue to be until something pops,” Palo Alto police Sgt. Brian Philip told the Daily News.

Pilot William McAdams was last seen on May 8 at an airport in Palo Alto. Surveillance video showed the 24-year-old between 1 and 2 a.m. before he slipped off with his employer’s Cessna G1000 Skyhawk.

A faint radar blip registered later about 70 miles off the California coast, but it wasn’t strong enough to pinpoint a location, NY Daily News reports.

And then he was gone — literally off the radar. He left no note, and police have turned up nothing as they stalk his social media accounts, cellphone records and bank accounts for any sign of activity.

“There’s not enough for us to even know where to search,” Philip said.

McAdams was arrested in April on serious charges in Florida. He pleaded not guilty to aggravated battery with a deadly weapon, false imprisonment and misdemeanor battery and was released on $16,000 bail on April 27.

McAdams is due back in court on June 2, if anyone can find him.