Berlin - A German union seeking pay rises for Berlin airport staff vowed to disrupt operations at two capital-city airports, with workers to walk off the job for three and a half hours on Tuesday.

Officials said Monday that in the period to be affected, after 6 am Tuesday, 50 takeoffs and 30 landings were timetabled at Tegel Airport and 20 takeoffs and nine landings were scheduled at Schoenefeld Airport.

A similar brief strike by the same union, Verdi, caused many cancellations earlier this month, because safety and fire staff were not available. Passengers were advised Monday to check with airlines for diversions or cancellations. (dpa)