Two employees of Safran Ventilation Systems are in critical condition after an explosion at the company’s plant in Blagnac, near Toulouse, on May 5, 2026, in what local authorities have described as a serious industrial accident at one of the most sensitive nodes of the French aerospace supply chain.
The blast occurred at around 10:30 local time inside a test bay on the site, located on Place Marcel-Dassault in the ZAC du Grand-Noble, a few hundred meters from Toulouse-Blagnac Airport (TLS).
According to La Dépêche du Midi, the explosion occurred during a high-pressure test, with the rupture of a pressurized nozzle cited as a possible cause. Safran has not confirmed that hypothesis.
Two workers were left in critical condition, and two others were lightly injured. Firefighters and police were deployed in numbers to the site, and the entire facility was evacuated.
Management subsequently sent staff home, halting production for the day while the installations were secured and initial technical observations were carried out. A psychological support unit was set up for employees present at the time of the blast, a standard measure for industrial accidents of this kind.
Site evacuated, two more workers lightly injured
Safran has confirmed the accident and announced it has launched an internal investigation in coordination with the relevant authorities and the labor inspectorate to identify the technical origin of the blast and prevent a recurrence.
Toulouse public prosecutor David Charmatz told AFP that an inquiry had been opened on the charge of involuntary injuries to determine the chain of events and any potential liability. The investigation, entrusted to the police, is expected to examine the condition of the equipment involved, compliance with safety procedures in the test bay, the operating conditions on the day of the accident, and any prior alerts concerning the installation.
Test benches used to qualify aerospace ventilation and pressurization equipment routinely operate at significant pressures and airflows to replicate the operational envelope of the systems under test, making them subject to particularly strict safety and maintenance protocols.
A key Safran site for aerospace ventilation systems
Safran Ventilation Systems is a subsidiary of Safran Electrical & Power and one of the world’s leading suppliers of aerospace ventilation equipment, including fans, valves, and electric compressors.
According to the company, the Blagnac plant designs, develops, produces, and maintains components serving more than 20 customers in the aerospace and defense sectors. These equipment items are typically integrated into cabin air conditioning, pressurization, avionics cooling, and thermal management systems on commercial aircraft and military platforms.
The Blagnac site combines production, maintenance, repair, and overhaul (MRO) activities with research and development. The subsidiary, which employs around 500 people, also operates a production site in Seattle in the US, and an MRO facility in Singapore.