US property tycoon Donald Trump's planned visit to his mother's home in Scotland next week could be scuppered by an airport strike.
The billionaire said he planned to visit Stornoway on the Isle of Lewis on Monday before flying in to Aberdeen to give evidence in support of his planned golf resort at a public hearing.
But a possible 24-hour pay strike by airport firefighters on Monday has raised the prospect of aircraft being unable to touch down at Stornoway.
Highlands and Islands Airports Limited, which operates ten airports including Stornoway, said it could only guarantee that Inverness airport would not be disrupted or closed as a result of the action.
Trade union Unite has identified June 9 and July 4 as dates for industrial action. While Mr Trump is likely to arrive in a private aircraft and the action is more likely to affect scheduled flights, it is still not clear if unscheduled flights would be affected.
A spokesman for HIAL said it had notified flight operators that all its airports other than Inverness were likely to be affected, although it is continuing to make contingency plans with fire service personnel not affected by the strike.
He said: "The operational impact at our other nine airports is still being assessed but the worst case scenario remains that if firefighters and leading firefighters strike then airports will be closed for scheduled flights.
"The Airport Fire Service personnel not represented by Unite are not sufficient in number to cover all our airports but we are looking at how best they could be deployed. "We will be advising airlines and the public on Thursday this week of the final position for the first day of action on June 9 once contingency plans have been finalised."
Mr Trump will give evidence at the Public Local Inquiry, which was ordered by Scottish ministers after Aberdeenshire Council rejected plans for his £1 billion development at Menie Estate.
Environmental groups and local campaigners have criticised the scheme, while many leading business figures have pledged their support.