A United Airlines flight UA47 from Frankfurt (FRA) to Houston (IAH) declared an emergency (squawk 7700) and returned to Frankfurt due to a mechanical issue.
The aircraft involved, Boeing 777-224(ER), registration N78013, has no other record in our database at the time of publication.
Courtesy of Flightradar24.com
United Airlines flight UA47 declared emergency and returned to Frankfurt due to mechanical issue