Casualties unknown

Landing Gear Issue Precedes Stall and Collision on Takeoff (N639V)

Albuquerque, NM, US

On February 5, 2000, a Beech M35 (registration N639V) was involved in an aviation accident near Albuquerque, NM. Investigators recorded the probable cause as: The pilot inadvertently allowing the airplane to stall. Factors were the missing alternator belt and the resultant total electrical system failure, and the pilot's attention being diverted. 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 2026-06-10Data APIEditorial standards

During takeoff, controllers noted landing gear did not fully retract. The pilot performed steep turns, the aircraft stalled, and collided with terrain near the runway. An alternator belt was missing, battery voltage low.

Event Overview

During the takeoff roll, air traffic controllers observed that the landing gear failed to retract completely. They advised the pilot of the situation, but the pilot did not acknowledge the advisory.

Flight Path

After departure, the aircraft entered a left traffic pattern for runway 8. Subsequently, the pilot executed steep turns to align for a right base leg and final approach to the same runway. During this maneuver, the airplane began rocking back and forth before appearing to stall.

Collision

The aircraft then collided with terrain in the vicinity of the runway threshold.

Post-Accident Examination

Investigators found that the alternator belt was missing. The alternator itself was later bench-tested with a fresh battery and operated normally. The aircraft's battery produced a voltage of 8.49 volts, which was sufficient to energize the field coils; it was determined to be capable of being recharged.

Additional Details

No other mechanical anomalies were reported. The flight was conducted under visual flight rules.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X20481. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.