Honolulu, April 22 (AP)  A 16-year-old boy stowed away in the wheel well of a flight from California to Hawaii, surviving the trip halfway across the Pacific Ocean unharmed despite frigid temperatures at 11,500 metres and a lack of oxygen, FBI and airline officials said.

FBI spokesman Tom Simon in Honolulu told The Associated Press on Sunday night that the boy was questioned after being discovered on the tarmac at the Maui airport with no identification.

“Kid’s lucky to be alive,” Simon said.

Simon said security footage from the San Jose airport verified that the boy hopped a fence to get to Hawaiian Airlines Flight 45 on Sunday morning. The teen had run away from his family after an argument, Simon said. When the flight landed in Maui, the boy hopped down from the wheel well and started wandering the airport grounds.

“He was unconscious for the lion’s share of the flight,” Simon said. The flight lasted about five-and-a-half hours.

Hawaiian Airlines spokeswoman Alison Croyle said airline personnel noticed the boy on the ramp after the flight arrived and immediately notified airport security.

Simon said the boy was medically screened and found to be unharmed. “He doesn’t even remember the flight,” Simon said. “It’s amazing he survived that.”

The boy will not be charged with a crime. In August, a 13 or 14-year-old boy in Nigeria survived a 35-minute trip in the wheel well of a domestic flight after stowing away.

Others stowaways in wheel wells have died, including a 16-year-old killed during a flight from Charlotte, North Carolina, to Boston in 2010 and a man who fell onto a suburban London street from a flight from Angola in 2012.