Ransomware Disrupts Collins Aerospace Systems, Causing Major Flight Delays Across Europe

December 10, 2025

INCIDENT

A cyberattack disrupted the MUSE (Multi‑User System Environment) check‑in, boarding and baggage handling software operated by Collins Aerospace — a major aviation systems provider and aerospace subsidiary of RTX Corporation. This incident impacted multiple large airports across Europe. Systems affected were automated electronic check‑in desks; boarding pass printing and baggage drop systems; shared passenger processing kiosks.

London Heathrow Airport (UK) reported long delays and manual operations. Brussels Airport (Belgium) reported cancellations and many delayed flights some days saw airlines cancel ~50 % of scheduled departures. Berlin Brandenburg Airport (Germany) experienced check‑in and boarding disruptions, long wait times. Dublin and Cork Airports (Ireland) experienced moderate to minor impacts on check‑in and boarding. Other European airports with MUSE dependency also reported delays.

Incident Date

September 19, 2025

Estimated Cost

Electronic check‑in and boarding systems down; extensive flight delays and cancellations; manual processing fallback; operational recovery over ~10–16+ days

Type of Malware

No Malware identified

Threat Source

No threat source identified