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File No. 880-42
- Captain Shank and First Officer Nygren were physically qualified and had proper certificates of competency to perform their duties on the flight in question.
- Aircraft NC 21714 was currently certificated as airworthy at the time of the accident.
- At the time of departure from Bismarck, the aircraft was properly loaded and the weight distributed in such a manner that the c.g. was within the allowable limits.
- The Civil aeronautics Administration Weekly Notice to Airmen, dated May 7, 1942, carried proper warning of the obstructions on the Miles City Airport. This warning was posted an the bulletin board in the flight office at both Minneapolis and Miles City an April 27, 1942, in the airport condition report which was attached to Captain Shank's flight plan.
- The weather conditions in the Miles City area at the time Trip 1 landed were within the allowable limits.
- The radio range facilities were operating normally at the time of the accident.
- There were no icing conditions which would affect the flight during its approach.
- The time of the last radio contact was 11:46 (MWT), at which time the plane was circling the field to the left after its second approach.
- The right wheel first contacted the runway southeast of the intersection of the two runways, and slightly beyond the left wheel also contacted the ground. After rolling the entire remaining usable portion of the runway, the left wheel struck a windrow of material located at the end of the runway. After application of power, the aircraft continued through the boundary fence, off the plateau, into a gully and burned.
