Casualties unknown

1994-03-25: Mooney M20J (N4780H) — Muscle Shoals, AL

Muscle Shoals, AL, US

On March 25, 1994, a Mooney M20J (registration N4780H) was involved in an aviation accident near Muscle Shoals, AL. Investigators recorded the probable cause as: The throttle cable was found loose, which prevented obtaining full power. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

Witnesses reported the engine did not produce full power during takeoff. After becoming airborne, power decreased further. The pilot returned but hit the ground on final approach. Post-accident inspection found a loose throttle cable.

Accident Details

According to witnesses, the engine failed to produce full power during the takeoff roll. As a result, the takeoff roll was longer than normal, utilizing over half of the 4,000-foot runway. The pilot reported that the power output decreased further after becoming airborne. The pilot then immediately entered a downwind leg and returned to the departure runway at low level.

Final Approach and Impact

On final approach, prior to reaching the runway, the left wing struck the ground, causing the airplane to cartwheel.

Post-Accident Findings

Following the accident, the throttle cable was found to be loose. This condition prevented obtaining full engine power. An entry in the aircraft log book indicated that an annual inspection had been performed the previous day. Additionally, the engine log contained an entry indicating that a 100-hour inspection had been accomplished the previous day.

Probable cause

The throttle cable was found loose, which prevented obtaining full power.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X00849. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.