British Airways BA919 Investigated After Stall Warnings Over London

A British Airways flight from Düsseldorf to Heathrow is under investigation after an air-data failure triggered two stall warnings during its approach over London, leading the crew to declare a mayday before landing safely.

Air accident investigators are examining a serious incident involving British Airways flight BA919 after an Airbus A320 encountered stall warnings while approaching Heathrow Airport on 6 July 2026.

Preliminary information recorded by France’s civil aviation safety investigation authority, based on a notification from UK investigators, says an Air Data Reference failure triggered an initial stall warning. The aircraft then entered “alternate law”, a degraded flight-control mode, and the crew declared a PAN urgency call.

A second stall warning occurred at about 3,000ft, followed by what the preliminary record describes as a “possible aggressive recovery”. The PAN call was upgraded to a mayday, but the aircraft subsequently landed at Heathrow without further incident.

No injuries or aircraft damage were recorded. The flight had departed Düsseldorf and was carrying passengers to London, although the number of people on board has not been disclosed. The occurrence has formally been classified as a serious incident.

What Does The Official Record Confirm?

The Air Accidents Investigation Branch is leading the inquiry. It has not yet issued findings explaining why the air-data failure occurred, how the pilots responded or whether the aircraft entered a fully developed aerodynamic stall.

An Air Data Reference system calculates information including an aircraft’s airspeed using pressure readings collected by instruments such as pitot tubes. Incorrect or unavailable data can affect the information presented to pilots and the behaviour of automated flight-control systems.

Reports based on unnamed aviation sources have claimed that the aircraft stalled at around 4,000ft near Canary Wharf and that the captain physically intervened after the first officer’s initial response failed.

Those reports have also described the event as being “seconds from disaster” and among the UK’s most serious recent near misses. It has separately been claimed that the captain was later placed on stress leave.

None of those details has been confirmed in the preliminary official notification. In particular, investigators have not publicly attributed the event to a pilot error or established that a crash was only seconds away.

British Airways said: “We’re assisting the AAIB with its investigation and are legally unable to comment further at this stage.”

Why Does The Wording Matter?

The official notification refers to stall warnings rather than definitively stating that the A320 stalled. A stall warning indicates that an aircraft is approaching, or is believed by its systems to be approaching, a condition in which its wings may no longer produce sufficient lift.

Investigators will need to examine flight-recorder information, cockpit communications, aircraft systems, maintenance records and air-traffic control data before establishing the sequence of events.

The “serious incident” classification is nevertheless significant. Under the definition used by UK investigators, it applies when circumstances indicate there was a high probability of an accident. It does not itself establish blame or confirm every detail reported about an occurrence.

The AAIB’s role is to determine the circumstances and causes of aviation accidents and serious incidents, then recommend measures intended to prevent similar events. Its investigations are conducted for safety purposes rather than to assign criminal or civil liability.

The inquiry remains open, and no timetable has been announced for the publication of a preliminary bulletin or final report. Until investigators release further evidence, claims about individual pilot responsibility, the precise position of the aircraft and how close it came to disaster remain unconfirmed.