NC5711 - Incident: Northern Air Cargo B734 near Chicago on Dec 7th 2023

A Northern Air Cargo Boeing 737-400, registration N403YK performing flight NC-5711 from Newark,NJ to Salt Lake City,UT (USA), was enroute at FL360 about 70nm southwest of Chicago Rockford,IL (USA) when the crew donned their oxygen masks, reported smoke and decided to divert to Rockford. The crew opted for a straight in approach to runway 07 and landed safely on runway 07 about 14 minutes after leaving FL360, vacated the runway and stopped on the parallel taxiway for inspection by emergency services.

The airline reported there was a mechanical concern. Crew and aircraft are safe, the cargo was already unloaded. The cause of the mechanical discrepancy is under review.