Dundee Airport will again be at a standstill as a second day of strike action has been announced.
Following the industrial action on May 23, which grounded all flights leaving Dundee on the day, union Prospect has announced another day of strikes will take place on June 12.
Other airports involved in the pay dispute with air traffic controllers include Inverness, Kirkwall, Stornoway, and Benbecula.
The union has accused employer Highlands and Islands Airports Ltd (Hial) of not being open to negotiating, but Hial hit back accusing Prospect of the same.
Prospect negotiator David Avery said: “Since the initial strike action we have received no new offer from the employer, therefore our members have taken the decision to undertake a second day of strike action.
“The onus is now on Hial and Scottish Government ministers to engage seriously with this dispute and come up with a proposal that will resolve this issue.
“We remain willing to negotiate in good faith and hope that an acceptable solution can be found.”
Inglis Lyon, Hial managing director, said: “Prospect were advised yesterday morning that Hial were preparing for a further proposal which we hoped would resolve the current dispute, and would be presented to them early next week.
“Our proposal recognises the skills of our air traffic control officers and the importance of delivering air traffic management services for the future.
“We requested that Prospect suspend further dates for strike action to allow consultation on our offer to take place. It is extremely disappointing that the union has chosen to ignore our request and announce a further day of strike action.
“Our aim is to resolve this dispute as soon as possible and we will, of course, continue to engage with Prospect to consult on our proposal.”