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Atlas / NTSB / SEA96MA079

NTSB CAROL · Event

Event SEA96MA079

1996-04-11 CHEYENNE, Wyoming, United States Airport · CYS Fatal 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

the pilot-in-command's improper decision to take off into deteriorating weather conditions (including turbulence, gusty winds, and an advancing thunderstorm and associated precipitation) when the airplane was overweight and when the density altitude was higher than he was accustomed to, resulting in a stall caused by failure to maintain airspeed. Contributing to the pilot-in-command's decision to take off was a desire to adhere to an overly ambitious itinerary, in part, because of media commitments.

Factual narrative

Refer to NTSB Report PB 97-910402. A 7 year old trainee (passenger), accompanied by her father (a passenger) and the pilot-in-command (PIC), were engaged in a trans-continental record attempt involving 6,660 miles of flying in 8 consecutive days. The 1st leg of the trip (about 8 hours of flying) had been accomplished the previous day and began/ended with considerable media attention. On the morning of the 2nd day, the PIC and the trainee participated in media interviews, pre-flighted, and then loaded the airplane. The PIC then received a weather briefing and was advised of moderate icing conditions, turbulence, IFR flight precautions, and a cold front in the area of the departure airport. The airplane was taxied in rain to takeoff on runway 30. While taxiing, the PIC acknowledged receiving information that the wind was from 280 degrees at 20 gusting 30 knots and that a departing Cessna 414 pilot reported moderate low-level windshear of +/- 15 knots. The airplane then departed on runway 30 towards a nearby thunderstorm and began a gradual turn to an easterly heading. Witnesses described the airplane's climb rate and speed as slow, and they observed the airplane enter a roll and descent that was consistent with a stall. Density altitude at the airport was 6,670 feet. The airplane's gross weight was calculated to be 84 pounds over the maximum limit at the time of the impact. (See: NTSB/AAR-97/02 for detailed info) Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1996_SEA96MA079.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (icing, stall, turbulence, thunderstorm). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗