U.S., Aug. 23 -- Hawaiian Airlines said in a statement tonight it was determined that "a seal failed in the aircraft's left engine, causing the oil to leak onto hot parts of the plane's engine and air conditioning pressurization system, resulting in smoke in the cabin." The airline said the performance of the engine was not affected.

Hawaiian Airlines flight HA47 on the route from Oakland, California to Honolulu made an emergency landing today at around 11:40 a.m. at Daniel K. Inouye International Airport and was met by fire trucks - one which came from Hickam Air Force Base - and other first responders as the aircraft was filled with smoke.

Officials said the smoke appeared to originate from the cargo hold, and crews were set to inspect ...