Data from plane-tracker FlightRadar24 showed flight BA269 making a U-turn off its planned trajectory shortly after passing over the Western Isles.
The online altitude graph showed the flight descended over a thousand feet in a matter of minutes after turning around.
A BA spokesman told Daily Star Online: “We’re sorry for the delay to our customers’ travel plans.
“The flight is returning to Heathrow due to a minor technical issue.
PANIC: The flight descended over a thousand feet in a matter of minutes (Pic: GETTY/FLIGHTRADAR)
“Safety is always our very highest priority and our highly trained flight crew will always err on the side of caution.
The news comes in the wake of a separate incident in which a group of BA passengers were “stranded in the US for three days”.
Passengers on the British Airways Flight 2036 were scheduled to fly from Orland Airport to Gatwick on Thursday evening but were delayed for 24 hours due to mechanical issues.
DEPARTURE: The flight took off from Heathrow Airport (Pic: GETTY STOCK)
It is understood customers were given a hotel on Friday night in Florida.
A spokesperson for BA told Daily Star Online: “Our aircraft diverted to New York on Saturday morning as a precaution, following a minor technical issue. We are sorry to our customers for the delay to their travel plans.
“The safety of our customers and crew is always our priority.”