Air Nostrum Flight Returns to Madrid After Cabin Pressurisation Failure

An Air Nostrum flight from Madrid to Andorra–La Seu d'Urgell Airport returned to Barajas on Sunday afternoon after detecting a cabin pressurisation failure shortly after takeoff, prompting the crew to rule out a safe landing at the Aeroport de Montferrer i Castellbò.

Flight IB2326 carried 43 passengers, including some content creators, and was operating at strong but not full occupancy. The crew initially described the issue as an air conditioning problem, though passengers quickly questioned this explanation given the severity of the response. One traveller highlighted the lack of details in the announcement, noting that a simple cooling fault seemed unlikely to warrant the turnaround.

The aircraft landed under escort from firefighters, Guardia Civil officers, and possibly medical teams, who boarded for an initial inspection after all passengers disembarked. Air Nostrum arranged overnight stays in hotels at or near Barajas for those accepting company assistance. Passengers were woken around 4 a.m. Monday for a light breakfast before boarding a 6:40 a.m. flight to Barcelona's El Prat Airport, which proceeded without incident.

At El Prat, however, the bus transfer to La Seu d'Urgell faced nearly two hours of delay, mitigated only by a small snack. Road travel finally resumed shortly before 10 a.m., extending the ordeal for many bound for long-term stays or homes in Andorra or the Alt Urgell region.

The pressurisation system ensures cabin air matches breathable altitudes despite high cruising levels. A critical failure risks decompression, leading to hypoxia, confusion, loss of consciousness, or worse. The captain's prompt return prevented escalation, as passengers later acknowledged.

Frustration lingered over vague updates and logistical hiccups, with several already pursuing compensation under EU passenger rights regulations for the extended delays. Air Nostrum has not commented further on the aircraft's inspection, repairs, or the Sunday flight's official cancellation status.