Casualties unknown

2000-03-12: Piper PA-18-150 (N4069Z) — Belen, NM

Belen, NM, US

On March 12, 2000, a Piper PA-18-150 (registration N4069Z) was involved in an aviation accident near Belen, NM. Investigators recorded the probable cause as: A loss of engine power due to low cylinder compression from an open exhaust valve, and the pilot's failure to lean the fuel mixture. 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 newly licensed private pilot experienced an engine power loss while performing a short-field takeoff from an abandoned airstrip. The engine then shut down completely, leading to a hard landing that damaged the landing gear, engine mounts, and propeller.

Incident Overview

A private pilot, who had received his license earlier that morning, was taking his brother for a ride. The pilot performed a short-field takeoff from an abandoned 800-foot airstrip using full flaps. Shortly after lift-off, the engine began losing power, dropping approximately 500 to 700 revolutions per minute. When the pilot leveled off to maintain airspeed, the engine shut down completely.

Hard Landing and Damage

With flaps still extended and airspeed low during the flare, the airplane continued descending. A hard landing occurred, shearing off the landing gear and bending the engine mounts and propeller. Investigators found a tail wheel strike mark in the dirt 168 feet from the runway threshold. Just beyond that mark, two dirt berms showed evidence of being struck by the airplane's main landing gear.

Engine Examination

Following the incident, the engine was partially disassembled for inspection. The mixture control was found in the FULL RICH position. The no. 2 cylinder had a compression ratio of 45/80, attributed to exhaust blow-by.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X20612. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.