Overview
- A United Airlines Boeing 767 from Zurich declared a general “squawk 7700” emergency about 50 minutes into the flight and diverted to London Heathrow on Tuesday.
- The aircraft landed safely at Heathrow and was met by fire engines and emergency response teams after the alert.
- United has not confirmed the cause or the number of people on board, and reporters said the airline had been asked for comment.
- Squawking 7700 is a code pilots use to signal a broad emergency, which gives the flight priority and puts airport crews on standby as a precaution.
- Unverified social posts suggested a small onboard device fire, a claim that remains unconfirmed, and the incident follows an April 18 United diversion to Pittsburgh that prompted law-enforcement searches.