Casualties unknown

1983-07-09: Grumman American AA-1B (N1507R) — Boulder City, NV

Boulder City, NV, US

On July 9, 1983, a Grumman American AA-1B (registration N1507R) was involved in an aviation accident near Boulder City, NV. Investigators recorded the probable cause as: The pilot's decision to turn downwind at low altitude during a go-around and attempt to pass under power lines, which resulted in collision with rising terrain. 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

An aircraft collided with rising terrain during a low-altitude go-around at Boulder City, Nevada, after the pilot turned downwind and encountered power lines.

What happened

The accident occurred during an attempted landing at Boulder City under windy conditions. The pilot was operating in winds ranging from 20 to 30 knots when the aircraft bounced upon touchdown. Following this bounce, the pilot initiated a go-around maneuver.

Rather than climbing into the wind as standard procedure might suggest, the pilot turned downwind while still at low altitude. During this phase of flight, the aircraft encountered overhead wires and utility poles. In an effort to avoid striking the power lines by passing underneath them, the pilot lost sufficient altitude or control margin, resulting in a collision with the rising terrain.

The investigation

The investigation focused on the flight path during the go-around and the specific maneuvers executed to avoid obstacles. The primary finding was that the decision to turn downwind at low altitude, combined with the attempt to pass under power lines, led directly to the loss of controlled flight and subsequent impact with the ground.

Findings

The critical factors contributing to this accident were the low altitude during the go-around and the downwind turn. The pilot's attempt to avoid wires by going under them left insufficient clearance for the rising terrain. The weather conditions, specifically the 20-30 knot winds, likely contributed to the initial bounce and the difficulty in maintaining precise control during the low-altitude maneuver.

Safety message

Pilots should be aware that go-arounds at low altitude require immediate attention to climb performance and wind direction. Turning downwind in such conditions can significantly reduce airspeed and altitude retention, especially when avoiding obstacles like power lines.

Probable cause

The pilot's decision to turn downwind at low altitude during a go-around and attempt to pass under power lines, which resulted in collision with rising terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X43811. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.