A pilot who was arrested at Birmingham Airport on suspicion of being drunk on duty will not be charged.

But the 51-year-old man is still suspended from work by Thomson, while the airline carries out its own investigation.

He was arrested on February 10 at the airport on suspicion of being unfit to perform aviation duties due to drink and released on police bail pending further enquiries.

It is not known if the pilot was arrested following a tip-off or as part of a routine spot check.

But on February 28 the pilot was told he would not be charged.

A spokeswoman for Thomson Airways said: “We are aware that allegations of an aviation offence brought against one of our pilots have been dropped.

“However, we are continuing to conduct an internal investigation into the situation and the pilot in question has been suspended.

“We are not able to comment further until our investigations are complete.’’

All pilots and cabin crew operating in the UK are governed by the aviation section of the Railways and Transport Act 2003.

Under the legislation, they must abide by much tighter alcohol intake restrictions than those imposed on car drivers.

The limits are nine mcgs of alcohol in 100 mls of breath – for driving it is 35 – and 20 mcgs of blood, against 80 in driving.