Casualties unknown

2007-07-21: Globe GC-1B (N3867K) — Mark S. Clark — Cottage Grove, OR

Cottage Grove, OR, US

On July 21, 2007, a Globe GC-1B (registration N3867K) operated by Mark S. Clark was involved in an aviation accident near Cottage Grove, OR. Investigators recorded the probable cause as: The partial/momentary loss of engine power during the takeoff initial climb for undetermined reasons, and the pilot's failure to maintain an airspeed above stall speed while maneuvering following the loss of engine power. 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 1948 Globe Swift experienced engine cough and sputter during takeoff initial climb, followed by a left wing drop and roll, leading to impact with a pond. The aircraft was 130 pounds over gross weight, and no mechanical anomaly was found.

Accident Details

Witnesses observed the airplane climb after departure from runway 15 when the engine coughed and sputtered. The engine rpm reportedly accelerated between two or three coughing/sputtering events. Subsequently, the left wing dropped, and the airplane rolled further left, descending below the tree line before impacting the surface of a small shallow pond approximately half a mile from the departure end of the runway.

Aircraft Information

The airplane was a 1948 Globe Swift. Prior to its purchase by the current owner in February 2006, it had been stored unused in a hangar for over 20 years. To prepare for an annual inspection, a number of inspections, adjustments, and component replacements were performed. The annual inspection was endorsed as completed on July 1, 2006. At the time of the accident, the airplane had accumulated 5 flight hours since that inspection.

Weight and Balance

Based on the occupant weights and fuel load, the airplane was approximately 130 pounds over the maximum allowable gross weight at the time of the accident.

Investigation

Extensive examination of the airframe and engine did not identify any anomaly or malfunction that would have contributed to the loss of engine power.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20070801X01078. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.