The Federal Aviation Administration is proposing a $45,125 fine against Horizon Air, accusing it of operating a small, twin-engine plane without inspecting it for cracks or corrosion around the engines.
Horizon, the regional airline owned by Seattle-based Alaska Airlines, has 30 days to respond to the fine. Horizon operates nearly 50 Bombardier Dash 8-400 planes.
The federal agency charges that Horizon failed to comply with an order to inspect a section of the aircraft the near the engine for cracks or corrosion every 300 hours, and make repairs as needed.
Between March 17 and 23, 2011, the FAA said Horizon operated the aircraft on at least 45 passenger flights after it had accumulated more than 300 hours of flight time since its last inspection.