Full Breakdown
British Airways A320 Issues Mayday Over Heathrow After Stall Warnings
7/31/2026, 8:41:02 PM
Incident Overview
On July 6, 2026, British Airways flight BA919, an Airbus A320-232 registered G-EUUN, was approaching London Heathrow from Düsseldorf when an air-data reference (ADR) failure triggered a stall warning. The aircraft’s flight-control system reverted from Normal Law to Alternate Law, removing certain automated protections. After a second stall warning at approximately 3,000 ft (915 m) and a “potentially abrupt recovery manoeuvre” that saw the aircraft descend to about 2,200 ft (670 m), the crew upgraded an earlier PAN PAN urgency call to a Mayday. The aircraft landed safely on Runway 27L with no injuries or reported damage.
Technical Background
- Air-Data Reference (ADR): Provides critical parameters such as airspeed and altitude from pitot and static sensors.
- Normal Law vs. Alternate Law: Normal Law supplies full envelope protection; Alternate Law remains flyable but reduces or removes protections, requiring greater manual handling by pilots.
- The ADR failure caused the flight-control computers to switch to Alternate Law, after which the first stall warning occurred. A subsequent warning at 3,000 ft prompted the crew to hold, reassess, and attempt a second approach.
Passenger Experience
Passenger Edward Killiwick, travelling with his partner Julie from a birthday celebration, described rising fear in the cabin. He said passengers were told the landing had been aborted, then felt a “very violent manoeuvre” that seemed to avoid another aircraft and heard the engines at full power. Killiwick reported a 15-minute holding pattern with little information from the crew, heightening anxiety about a possible crash.
Official Statements & Responses
- The Air Accidents Investigation Branch (AAIB) clarified that no field team would be dispatched at this stage.
- France’s Bureau d’Enquêtes et d’Analyses (BEA) reported the ADR failure, the switch to Alternate Law, and the sequence of stall warnings, noting that none of the occupants were injured.
Investigation Status & Open Questions
The AAIB’s preliminary notice does not confirm whether the aircraft actually entered an aerodynamic stall; it only records the generated stall warnings. It also does not specify whether the ADR failure affected a single sensor or multiple sources. The cause of the ADR failure remains undetermined, and investigators have not ruled out the possibility that erroneous air-data inputs contributed to the warnings. As of the July 31, 2026 report, the investigation remains ongoing, with a final report expected to address safety recommendations for British Airways and the broader aviation industry.
