Casualties unknown

2003-05-26: Boeing Stearman D75-N1 (N59768) — Avis, PA

Avis, PA, US

On May 26, 2003, a Boeing Stearman D75-N1 (registration N59768) was involved in an aviation accident near Avis, PA. Investigators recorded the probable cause as: A loss of engine power due to carburetor ice. A factor in this accident were weather conditions favorable to carburetor ice. 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 reported an engine power loss during descent, leading to an emergency landing in a corn field where the airplane flipped over. No mechanical malfunctions were found. Weather conditions were conducive to carburetor icing.

Incident Summary

A pilot experienced a loss of engine power while descending, resulting in an emergency landing in a corn field. During the landing roll, the airplane flipped over and came to rest inverted.

Pilot Actions

The pilot reported that the airplane was in cruise flight when he reduced the throttle to idle and began a gradual descent to about 500 feet. At that altitude, he advanced the throttle, but the engine did not respond and only developed a "fast idle." Despite attempts, the pilot was unable to restore engine power. He located a corn field and performed an emergency landing.

Investigation

Examination of the airplane following the accident did not reveal any pre-impact mechanical malfunctions. The cause of the engine's failure to respond to throttle input was not determined from the examination.

Weather Conditions

A weather observation from an airport approximately 20 miles east of the accident site reported a temperature of 62°F and a dew point of 55°F. According to a Federal Aviation Administration carburetor icing probability chart, these conditions were favorable for moderate icing at cruise power or serious icing at glide power.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20030527X00730. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.