Airbus helicopters must replace certain bolts after reports of over-torquing

The US aviation regulator is ordering all Airbus MBB-BK 117 D-3 helicopters to replace specific bolts in their swashplate assembly. This means operators must remove the old bolts and inspect for damage, or they cannot fly the helicopters.

This is a mandatory safety fix for a specific helicopter model. The bolts in question are critical for controlling the helicopter's main rotor. If they fail, the aircraft becomes uncontrollable. This order ensures that all affected helicopters are inspected and repaired, preventing potential accidents.