THE chief executive of the region's biggest airports has resigned as an investigation continues into "personal contractual issues".

John Parkin, widely regarded as the man who turned around the fortunes of Newcastle International Airport, was suspended from his role in March.

A probe was launched into the issues and the news sparked speculation over the reasons behind his removal from duties.

A statement issued by the airport yesterday said: "Following a statement issued on March 23, 2007, concerning the suspension of John Parkin, chief executive, and an associated ongoing investigation into certain personal contractual issues, Newcastle International Airport Limited confirms that Mr Parkin has resigned from the company with effect from Friday, May 11, 2007.

"Since March 23, significant progress has been made in connection with the investigation into the personal contractual issues and Mr Parkin's resignation does not affect or impact on the ongoing inquiry.

"We are advised that, because of the legal nature of the ongoing investigation, we are unable to make any further comment on the matter at this time."

Mr Parkin echoed that comment, saying due to the ongoing inquiry it would be inappropriate to comment in full.

"However, I am confident that I have fulfilled all of my contractual obligations to Newcastle International Airport and that the inquiry will confirm this in due course," he said. "I would only add that I am very proud of my record as chief executive of Newcastle International Airport since 2002 and of my achievements while in that post.''

Mr Parkin succeeded Trevor Went as chief executive of the airport, in May 2002.

Under his leadership, passenger numbers continued to grow and new routes were added.

David Laws, formerly the airport's commercial and aviation development manager, has taken over Mr Parkin's duties.