A Cathay Pacific Airbus A350-1000 bound for London was intercepted by NATO fighter jets on July 4 after the aircraft briefly lost radio contact with air traffic control over Romania, triggering the alliance's quick reaction alert.
The aircraft was operating flight CX257 from Hong Kong (HKG) to London Heathrow (LHR). The widebody β an Airbus A350-1000 registered B-LXA and capable of carrying up to 334 passengers β stopped responding to Romanian civil air traffic controllers while transiting Romanian airspace during the early afternoon.
The loss of contact prompted NATO to order a quick reaction alert at 1:42 pm Central European Time. Hungary, which borders Romania, scrambled two readiness aircraft that took off at 1:51 pm to investigate. The fighters located the A350 and issued a visual warning near the Hungarian border, after which the crew re-established communication with air traffic control and the flight continued normally.
Cathay Pacific confirmed the sequence of events. The carrier said flight CX257 experienced a "brief communication interruption" with local air traffic control along its route on July 4, adding that communication was restored shortly after the interception "in accordance with internationally recognised protocols." The flight continued as planned and arrived at London Heathrow on schedule.
Interceptions of this kind, while dramatic, follow a well-rehearsed script. When an airliner stops answering on the assigned frequency in busy European airspace, controllers and military authorities cannot immediately distinguish a simple radio problem from something more serious. A quick reaction alert allows fighters to make visual contact, confirm the aircraft is being flown normally and relay instructions when radios have failed.
Radio silence has many benign causes, including a tuning error to the wrong frequency, a stuck or misconfigured radio, or high crew workload during a busy phase of flight. In this case the gap was short-lived, and there was no indication of any threat to the aircraft or its occupants.
The Airbus A350-1000 is the largest member of Airbus's A350 family and a mainstay of Cathay Pacific's long-haul fleet, regularly deployed on the airline's flagship routes between Hong Kong and Europe. Heathrow is one of Cathay's most important destinations, served by multiple daily departures.
Following the incident, Cathay Pacific has been asked to submit a report on the communication loss. With no injuries and no damage reported, the episode is likely to be remembered less for any danger to those on board than as another demonstration of how quickly NATO air-policing assets respond when an airliner falls silent over the continent.
Sources: AeroTime, AeroInside. Featured image: AI-generated by AviationShop. By James Holloway.
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