Gulfstream G-IV accident near Sheridan, Wyoming, September 6, 2000
On September 6, 2000 at about 8:40 pm local time, a Gulfstream G-IV, registered N1625, was involved in an accident near Sheridan, Wyoming. It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured; 11 others were unhurt. The weather was visual conditions (good weather).
Preview. This page is not yet listed for search engines.
The NTSB's probable cause their words, unchanged
the pilot's inadvertent flight into unforecasted turbulent weather conditions. A contributing factor was the turbulence.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 6, 2000 · about 8:40 pm local time
- Place
- Sheridan, Wyoming · map
- Type
- Accident
- Injuries
- 1 person was seriously injured; 11 others were unhurt.
- Weather
- visual conditions (good weather)
- Aircraft
- Gulfstream G-IV · all G-IVs on the register
- Registration
- N1625 · registry record · serial 1358
- Damage
- Not recorded
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pre-departure weather briefing received by the pilot called for occasional moderate turbulence below Flight Level 180. The captain stated that while descending at Flight Level 260, the airplane encountered unforecasted turbulence. One passenger was thrown "about the cabin" and sustained a broken ankle while returning to his seat after securing the galley at the pilot's request.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: airline transport pilot
- Ratings: multi-engine land; multi-engine sea; single-engine land; single-engine sea; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 8,662 hours in all; 517 in this make and model; 6,481 as pilot in command
- Medical certificate: Class 1 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 390 hours
- Last inspection: 100-hour inspection, September 1, 2000; 36 hours since
- Maximum gross weight: 75,000 lb
- Seats: 14
- Landing gear: retractable
- Engine: Rolls-Royce TAY MK611-8 (turbofan); 0 hours total
The flight
- Departed from: HPN White Plains NY at 5:00 pm
- Destination: SHR
- Flight plan: IFR
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 290° at 15 knots
- Visibility: 10 statute miles
- Sky: overcast at 6,000 ft; scat at 1,900 ft
- Temperature: 129°F (54°C), dew point 115°F (46°C)
- Altimeter: 30.00 inHg
- Observation at 8:56 pm from SHR
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 2 | |||
| Passengers | 1 | 9 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number DEN00LA165.