Casualties unknown

Balloon Incident During Landing Approach (N9011J)

Louisville, CO, US

On July 11, 2003, a National Ballooning Ltd 858 (registration N9011J) was involved in an aviation accident near Louisville, CO. Investigators recorded the probable cause as: The pilot's inability to control the balloon. Contributing factors include the high winds, the attempted remedial action by the pilot, the building, fence, and transmission wires. 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 2026-07-04Data APIEditorial standards

A balloon accelerated and descended rapidly during an approach, failed to clear a fence, and ejected occupants after ground impact, later striking structures and wires.

Flight Details

According to the pilot, the balloon departed under variable wind conditions at 6 knots. Approximately at 0710, the wind increased to 22 to 24 knots. About 30 minutes later, the pilot identified a landing site and began an approach.

Approach and Descent

During the approach, the balloon's forward speed increased and its rate of descent became greater than intended. The pilot reported that he "quickly went to two burners" but observed no result. The balloon subsequently failed to clear a fence, prompting the pilot to pull the "red line."

Impact Sequence

The basket contacted the ground, ejecting both the passengers and the pilot. The pilot was then dragged behind the basket until his foot became disentangled from the red line. Following this, the balloon struck "a building, a fence, a farm gate and transmission wires." The envelope was torn open at multiple locations.

Weather Conditions

The aviation routine weather report (METAR) from Jefferson County Airport at 0747 indicated wind from 340 degrees at 20 knots.

Frequently asked questions

What happened in the 11 Jul 2003 National Ballooning Ltd 858 accident near Louisville, CO?

A balloon accelerated and descended rapidly during an approach, failed to clear a fence, and ejected occupants after ground impact, later striking structures and wires.

What aircraft was involved and where did it happen?

The accident on 11 Jul 2003 involved a National Ballooning Ltd 858, registration N9011J, at Louisville, CO.

What was the probable cause of the accident?

The pilot's inability to control the balloon. Contributing factors include the high winds, the attempted remedial action by the pilot, the building, fence, and transmission wires.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20030725X01195. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.