Casualties unknown

1990-12-15: Grumman AA1B (N1638R) — Guffey, Jerry D. — Roswell, NM

Roswell, NM, US

On December 15, 1990, a Grumman AA1B (registration N1638R) operated by Guffey, Jerry D. was involved in an aviation accident near Roswell, NM. Investigators recorded the probable cause as: LOW CYLINDER COMPRESSION AND FOULED SPARK PLUG. 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

During initial climb after takeoff at about 150 feet, the engine began running rough and deteriorated. The pilot performed a forced landing, resulting in hard ground contact and substantial damage to the engine cowling and main landing gear. Post-accident examination found foul spark plugs and low compression.

Accident Overview

A pilot reported that after takeoff, while climbing through approximately 150 feet above ground level, the engine began to run rough. Engine performance continued to deteriorate, prompting the pilot to execute a forced landing. During the landing, the aircraft struck the ground hard, sustaining substantial damage to the engine cowling and the main landing gear.

Post-Accident Examination

Subsequent examination of the engine revealed that one cylinder had fouled spark plugs, and all cylinders except one exhibited low compression. No further details about the engine condition were provided.

Aircraft and Flight Details

The source did not specify the aircraft type, registration, engine count, date, operator, location, number of occupants, or any injuries. The time of day, weather conditions, and whether air traffic control was involved were also not reported.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X24755. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.