BA277 - Incident: British Airways B772 at London on Apr 7th 2021

A British Airways Boeing 777-200, registration G-YMMR performing flight BA-277 from London Heathrow,EN (UK) to Hyderabad (India), was climbing out of Heathrow's runway 27R when the crew stopped the climb at 6000 feet advising ATC they had an aft cargo door open indication, they did not anticipate any real issue, however, requested a runway inspection to make sure they had left nothing on the runway. The runway was closed temporarily for the inspection with nothing found. Two aircraft on final approach were instructed to go around. The crew decided to return to Heathrow, climbed to FL070 to dump fuel and returned to Heathrow for a safe landing on runway 27R about 95 minutes after departure.

The aircraft remained on the ground for 140 minutes, then departed again and is estimated to reach Hyderabad with a delay of about 3.5 hours.