Taxiing traffic at Frankfurt Airport. Courtesy, Fraport AG

German airport operator Fraport said it was considering legal action after the GdF union urged control tower staff to join walkouts by Frankfurt Airport (FRA) apron workers. Fraport said such action will have a significant impact on operating, leading to mass cancellations of at least 300 flights.

Gdf wants 12 air traffic controllers to join the strike from 5 a.m. to 11 a.m. local time Wednesday, it said. Talks are underway to avoid the ATC action.

Walkouts by 190 apron workers over pay have canceled around 1,400 flights, with a further 200 expected Tuesday, about 140 of them operated by Lufthansa (ATW Daily News, Feb. 28).  Each day of strikes costs Fraport around €1 million ($1.34 million) in lost revenue.

Berlin airports Tegel and Schoenefeld could also announce wildcat strikes. Union Verdi said it is planning action on short notice within days. Talks concerning additional payment for 1,500 employees of Globeground Berlin have not been successful.