What aircraft was involved and where did it happen?

The accident on 1999-12-13 involved a Cessna 210D, registration N3807Y, at Saint Charles, MO.

Aircraft Impacts Terrain After Uncontrolled Descent Following Vacuum Failure (N3807Y)

On December 13, 1999, a Cessna 210D (registration N3807Y) was involved in an aviation accident near Saint Charles, MO. Investigators recorded the probable cause as: the aircraft control not maintained by the pilot and the pilot exceeded the design limits of the aircraft. The clouds and night conditions were contributing factors. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

During climb in overcast clouds, the pilot reported a vacuum failure and accepted a turn from ATC. The aircraft later impacted terrain in an uncontrolled descent. Post-accident examination found the vacuum pump operational and the gyro showing rotation.

Sequence of Events

While climbing through an overcast cloud layer, the pilot informed air traffic control that a vacuum system failure had occurred. In response, the controller issued a turn to an assigned heading, which the pilot accepted. Subsequently, the aircraft began an uncontrolled descent and impacted terrain.

Equipment Configuration

The aircraft was equipped with a vacuum-powered attitude indicator and an electrically powered turn and slip indicator.

Investigation Findings

Examination of the wreckage revealed that the vacuum pump was functional. Additionally, a vacuum gyro recovered at the accident site showed signs of having been rotating.

Additional Information

No further details were provided regarding the aircraft type, registration, operator, or personnel involved.

1999-12-13: Cessna 210D (N3807Y) — Saint Charles, MO