Chicago - Oklahoma City

On October 28, 1987 at 07:34 AM, Chicago - Oklahoma City experienced a crash involving Convair CV-640, operated by SMB Stage Line, with the event recorded near Bartlesville-Frank Phillips Oklahoma.

The flight was categorized as cargo and the reported phase was landing (descent or approach) at a airport (less than 10 km from airport) crash site.

2 people were known to be on board, 0 fatalities were recorded, 2 survivors were identified or estimated. This corresponds to an estimated fatality rate of 0.0%.

Crew on board: 2, crew fatalities: 0, passengers on board: 0, passenger fatalities: 0, other fatalities: 0.

The listed crash cause is human factor. The captain was cross-feeding both engines from the right tank while the first officer (f/o) was flying, without informing the f/o. The captain then left the cockpit while cross-feeding. Both tank valves and the right boost pump were on. The right tank ran dry, the right engine failed, and the prop autofeathered while the captain was absent. The captain returned, turned on the left boost pump, but left the right boost pump and the valves open, and attempted to restart the right engine. The left engine then failed but this was not recognized by the crew. The electrical system failed due to the attempted restarts and the fact that nonessential equipment was not turned off. The captain did not apply sufficient pull to the emergency gear handle to lower the gear manually. The aircraft was landed on a short wet sod runway, with the gear and flaps up, at a high rate of speed. The aircraft ran off the end of the runway, through a ditch, across a road, and into trees. Both pilots escaped uninjured.

Aircraft reference details include registration N3411, MSN 31, year of manufacture 1966.