What happened
During the takeoff roll, the crew attempted to increase power, which caused the number one engine to accelerate past the target engine pressure ratio. To manage the resulting asymmetric thrust, the crew utilized nose wheel steering and eventually performed an engine shutdown by using the fuel shut-off lever. During the high-speed deceleration attempt, the nose wheels became detached from the landing gear assembly.
There were two passengers who sustained minor injuries during the incident.
Findings
An investigation into the engine malfunction determined that the fuel pump output spline, which connects to the fuel control, had stripped. This failure occurred while the fuel control was detecting an underspeed condition, leading the system to increase fuel flow. The root cause of the stripped spline was identified as misalignment of the spline shaft caused by improper machining during a recent modification of the pump.
Additionally, the separation of the nose gear was attributed to the failure of the inner cylinder. This component failed due to fatigue in a specific area that had been subjected to excessive grinding during a previous overhaul process.