Pilots Union Warns of Silent Mechanical Defect Causing A320 Family Uncommanded Engine Shutdowns

A British pilots’ union has warned of a silent mechanical defect in certain Airbus cockpit fire-switch panels that can cause uncommanded engine shutdowns during flight.

The defect is caused by a faulty retaining pin that can release the cockpit fire-switch button without pilot input. This can lead to a potential catastrophic engine loss, particularly during takeoff or initial climb when crews have less time to identify the cause of an engine loss.

The British Airline Pilots’ Association, known as BALPA, has described the risk as “completely latent.” Crews may receive no specific warning before the switch disengages.

## EASA Action Covers Four A320-Family Models

The European Union Aviation Safety Agency has limited its mandatory action to A318, A319, A320, and A321 aircraft equipped with the affected Safran panels. The referenced directive, EASA AD 2025-0274R1, took effect on July 14, 2026.

| Model | Directive | | --- | --- | | A318 | EASA AD 2025-0274R1 | | A319 | EASA AD 2025-0274R1 | | A320 | EASA AD 2025-0274R1 | | A321 | EASA AD 2025-0274R1 |

EASA also lists AD 2026-0134, alongside earlier versions such as AD 2025-0274, requiring inspections of the affected assemblies. The compliance deadline runs to November 2027, a timetable BALPA has described as “uncomfortable” given the potential severity of the fault.

## Two Incidents Exposed the Failure Mechanism

An Air New Zealand A320neo suffered an engine shutdown in December 2024. Flight NZ249, carrying 142 passengers and 6 crew, lost its right-hand engine 15 minutes after leaving Wellington.

| Incident | Aircraft | Date | | --- | --- | --- | | Air New Zealand | A320neo | December 2024 | | British Airways | A350-1000 | February 19-20, 2026 |

Investigators found that a bent retaining pin had dislodged and triggered the fire shutoff. The aircraft declared a Mayday and made an emergency diversion.

A second case involved British Airways Flight BA274 on February 19-20, 2026. The A350-1000, registered as G-XWBR, lost an engine while cruising at 39,000 feet over Halifax, Canada, during a flight from Las Vegas to London Heathrow.

The captain was in the rest bunk. The remaining crew identified the dislodged fire switch and completed an in-flight relight.

## Crews May See Only Subtle Cockpit Clues

BALPA has warned that visual indications of a self-activated fire switch can be “subtle,” particularly in a darkened cockpit during night operations. The union has urged pilots to include the position of the fire pushbuttons in their emergency scans.

The panel also warned that the defect may initially produce “confusing or incomplete ECAM [Electronic Centralised Aircraft Monitor] indications.” That can complicate the first diagnosis.

Airbus reminded operators that a fire switch used in response to an actual fire warning or procedure should not be re-engaged. When an engine stops without an obvious fire, crews may consider a possible switch anomaly before following the approved restart procedure.

Modern twin-engine aircraft can fly safely on one engine. An engine loss can still prompt Mayday declarations, diversions, and passenger disruption.

## Airlines Face Inspections Alongside Other Engine Pressures

British Airways, Virgin Atlantic, and easyJet are among the carriers represented by BALPA whose fleets face additional maintenance work. The union’s warning concerns inspections involving hundreds of aircraft.

Airbus has sent Alert Operators Transmissions with technical instructions covering inspection and replacement of the fire-switch modules. The instructions also address the Elevator Aileron Computer, or ELAC.

The fire-switch issue arrives as airlines continue dealing with delays involving Pratt & Whitney GTF engines. That broader engine crisis has added pressure to maintenance programs.

EASA’s inspection approach does not automatically require affected aircraft to remain grounded. The agency has relied on inspections and part replacement, while BALPA is pressing for faster action and broader coverage.

The current compliance deadline is November 2027. Until then, the A350-1000 remains outside the A320-family directive despite one documented shutdown involving that aircraft type.