Casualties unknown

1992-09-26: Cessna 310R (N616CA) — Mor Tar Inc. — Idabel, OK

Idabel, OK, US

On September 26, 1992, a Cessna 310R (registration N616CA) operated by Mor Tar Inc. was involved in an aviation accident near Idabel, OK. Investigators recorded the probable cause as: THE PILOT'S DESCENT BELOW THE MINIMUM DESCENT ALTITUDE. FACTORS WERE THE PILOT'S IMPROPER IFR PROCEDURE, LOW CEILING, AND DARK NIGHT CONDITIONS. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A pilot accepted an NDB approach clearance without altimeter information, leading to an MDA of 1,300 feet. Despite weather reports indicating 800-foot overcast and 2-mile visibility at a facility 48 miles away, actual airport conditions were 200-foot overcast and 2-mile visibility. The pilot descended below the MDA and struck trees and the Little River approximately 7 miles north-northwest of the airport.

Approach Clearance

The pilot received a clearance to conduct the NDB Runway 17 approach at an uncontrolled airport. No altimeter information was provided, which set the minimum descent altitude (MDA) at 1,300 feet.

Weather Conditions

The weather reported to the pilot was from a facility 48 miles away: 800-foot overcast ceiling and visibility of 2 miles. In contrast, weather at the airport was measured as 200-foot overcast ceiling and 2 miles visibility. The light condition was described as dark night with fog and haze.

Accident Sequence

The airport manager heard the airplane pass over the NDB and attempted to contact the pilot by radio, but was unsuccessful. The pilot continued the approach and descended below the minimum descent altitude. The airplane subsequently impacted trees and the Little River approximately 7 miles north-northwest of the airport.

Post-Accident Examination

A post-accident examination of the airplane and its systems revealed no mechanical anomalies. Approximately 8 hours after the accident, a 13-year-old passenger swam ashore and was later located about 1.5 miles from the accident site. At about the same time, rescuers found the wreckage.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X15693. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.