An Air France Boeing 777-300ER operating as flight AF652 from Paris to Réunion Island was forced to return after its air conditioning system failed midair. The cabin temperature rose sharply, forcing pilots to declare an emergency and divert back to Paris.
Heat Surge Forces Mayday Call
The flight departed Paris Charles de Gaulle Airport at 18:01 CEST with 312 passengers and 14 crew members on board. About two hours later, while flying over Switzerland, the cabin’s air conditioning system malfunctioned and switched into heating mode, making the cabin unbearably hot.
Emergency Landing and Fuel Dump
As the situation worsened, the pilots first issued a ‘pan’ call before escalating to a full emergency. They dumped fuel to ensure a safe landing and returned to Paris without any injuries reported. Emergency teams were on standby as the plane touched down safely.
Passengers Face Long Delay
Passengers were safely deplaned and later rebooked on another flight after a seven-hour delay. Although Air France arranged accommodation and compensation, several passengers expressed frustration over poor in-flight communication during the crisis.
Investigation Underway
Preliminary findings suggest that an electrical or hydraulic fault might have affected the aircraft’s environmental control system. France’s Bureau d’Enquêtes et d’Analyses (BEA) is investigating the incident, reviewing maintenance records and cockpit data to identify the fault.
Renewed Focus on Safety Standards
The incident has reignited debate on aircraft maintenance reliability and the need for stronger oversight in long-haul operations. While no injuries occurred, experts say the event underscores how unpredictable system failures can still challenge modern aviation.
