London Heathrow, Brussels, and Berlin airports are all experiencing delays and disruption following the “technical issue” affecting Collins Aerospace, which works for several airlines at multiple airports across the world. Heathrow said passengers should check their flight status before travelling to the west London airport. Heathrow said: “Collins Aerospace, which provides check-in and boarding systems for several airlines across multiple airports globally, is experiencing a technical issue that may cause delays for departing passengers. “While the provider works to resolve the problem quickly, we advise passengers to check their flight status with their airline before travelling. “We are working on a quick solution.”Collins Aerospace said it is working to resolve the issue as soon as possible.