Summary
On July 13, 2002, a American General Aircraft AA5B (N28717) was involved in an accident near Worland, WY. The accident resulted in 1 serious injury, with 1 person uninjured out of 2 aboard. The aircraft was destroyed.
The National Transportation Safety Board determined the probable cause of this accident to be: The pilot's selection of an inadequate altitude for crossing mountainous terrain, resulting in a collision with trees. A contributing factor was the downdraft.
On July 13, 2002, approximately 0930 mountain daylight time, a Grumman American AA5B, N28717, was substantially damaged when it struck terrain while maneuvering near Worland, Wyoming. Both the airline transport pilot was seriously injured, but his passenger sustained only minor injuries. Day visual meteorological conditions prevailed, and no flight plan had been filed for the cross-country flight being conducted under Title 14 CFR Part 91. The flight originated in Cody, Wyoming, at 0840, and was en route to Valentine, Nebraska.
In his accident report, the pilot said he was crossing the Big Horn mountain range approximately 800 feet above each series of ridges. He wrote, "After crossing a set of mountains, we hit a downdraft, causing both loss of altitude and loss of airspeed.
This accident is documented in NTSB report DEN02LA075. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N28717.
Accident Details
Probable Cause and Findings
the pilot's selection of an inadequate altitude for crossing mountainous terrain, resulting in a collision with trees. A contributing factor was the downdraft.
Aircraft Information
Registered Owner (Historical)
Analysis
On July 13, 2002, approximately 0930 mountain daylight time, a Grumman American AA5B, N28717, was substantially damaged when it struck terrain while maneuvering near Worland, Wyoming. Both the airline transport pilot was seriously injured, but his passenger sustained only minor injuries. Day visual meteorological conditions prevailed, and no flight plan had been filed for the cross-country flight being conducted under Title 14 CFR Part 91. The flight originated in Cody, Wyoming, at 0840, and was en route to Valentine, Nebraska.
In his accident report, the pilot said he was crossing the Big Horn mountain range approximately 800 feet above each series of ridges. He wrote, "After crossing a set of mountains, we hit a downdraft, causing both loss of altitude and loss of airspeed. We attempted a 180-degree turn to get out of the downdraft, but combined with the rising terrain, we were unable to complete the turn. We hit a tree lot at 70 KIAS (knots indicated airspeed) and then impacted the ground."
Both wings and the landing gear were torn off the airplane.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# DEN02LA075