Flight History
The pilot was cleared for an Instrument Landing System (ILS) approach to Runway 35. During the approach, the glide slope indication became erratic at the outer marker, prompting the pilot to continue with a straight-in localizer-only approach. The pilot stated that he descended to the minimum descent altitude (MDA) of 1,400 feet (335 feet above ground level), but the aircraft was still in clouds.
Approach and Impact
While checking the VHF control head to ensure proper frequency setting for activating the approach lights, the aircraft struck the ground. Initial impact occurred approximately 1 mile south of the approach end of Runway 35 and about 100 yards left of the inbound ILS localizer course.
Weather and Airport Conditions
Weather reported at Kansas City Downtown Airport (23 miles northeast of the accident site) was 900 feet broken ceilings and 6 miles visibility. The tower was closed and the control zone was not in effect, which increased the MDA by 100 feet. The pilot had been given this weather information.
Aircraft and Systems Examination
No malfunctions were found in the aircraft's ILS receivers or the number one omni-bearing selector (OBS). A flight inspection of the ILS was satisfactory.
Pilot Information
In addition to 7 hours of duty time associated with the flight, the pilot had worked a normal duty day on May 11, involving management functions, and had rested 3 to 4 hours prior to the flight.