Aircraft and passengers are backing up at Frankfurt Airport: At Lufthansa, a failure of the IT systems is currently causing a number of delayed or canceled flights. The reason: railway construction work.

A group-wide IT system failure at Lufthansa massively disrupts the flight operations of the airline group at the Frankfurt hub. This affects systems for checking in and boarding, said a Lufthansa spokesman. There are massive delays and flight cancellations. The cause was civil engineering work by Deutsche Bahn during the night in Frankfurt, during which several fiber optic cables from Deutsche Telekom were severed.

Telekom explained in an information to customers that voice and Internet services were affected. “We assume that the complete elimination of the disruption will last until the afternoon,” the statement said. Lufthansa and Eurowings flights in Germany were affected.

According to Lufthansa, however, not the other airlines in the group – the Austrian Austrian Airlines, the Belgian Brussels Airlines and the Swiss Swiss. From around eight o’clock onwards, reports of problems at Lufthansa began to pile up on the Alle disturbances.de website.

According to the Frankfurt Airport website, a good 30 outgoing flights from the airline were canceled in the morning. When it came to arrivals, there were more than 90 connections. Munich Airport initially reported around seven cancellations on departure and arrival. In Hamburg there was only one Lufthansa connection in the morning.

A Lufthansa spokesman did not confirm a report by the Bloomberg news agency that all Lufthansa Group departures had been canceled. Initially, no statement was received from Deutsche Telekom and German air traffic control.