British Airways is being taken to employment tribunal by cabin crew claiming racial discrimination.
The group of BA flight attendants claim that the removal of a discounted travel perk from staff involved in strike action discriminates indirectly against employees based in Scotland, Ireland and mainland Europe who use the scheme to commute to and from Heathrow airport, the Guardian has reported.
BA said it "totally rejected" the claim of discrimination and would defend any claim vigorously.
A dispute over pay, jobs and working conditions has so far resulted in 22 days of strikes since March.
The Unite trade union postponed its latest strike ballot to allow staff to consider the company's latest proposal. Bosses offered a two-year pay deal in line with inflation but will retain the onboard staffing cuts that started the dispute last year.
The result of that ballot is set to be announced later today (Tuesday).