Ashley Olsen's flight to Los Angeles was grounded on Monday (10Dec12) due to a mysterious odour in the cockpit.

The former Full House actress was departing Dallas, Texas on American Airlines flight 2421 when pilots were forced to abort plans for take-off and return to the gate after spotting smoke permeating from one of the aircraft's engines.

All 211 passengers were then transferred onto a second Boeing 767.

A company spokesperson tells TMZ.com the flyers suffered a two-hour delay.

This isn't the first time Olsen has been caught up in a flight scare - in 2010 the former child star was traveling to New York with her then-boyfriend Justin Bartha when they had to make an emergency landing due to a mid-air blaze.