Cessna 208B accident near Williston, Vermont, January 30, 1990
On January 30, 1990 at about 2:00 am local time, a Cessna 208B, registered N4688B, was destroyed in an accident near Williston, Vermont (Burlington airport). It was a flight of an unrecorded kind under charter and air-taxi rules (Part 135). 2 people were killed. The weather was instrument conditions (cloud, fog or low visibility).
The NTSB's probable cause their words, unchanged
THE FAILURE OF THE PILOT TO DE-ICE THE AIRPLANE PRIOR TO DEPARTURE, AND HIS DECISION TO MAKE THE TAKEOFF AT A WEIGHT THAT EXCEEDED BOTH THE MAXIMUM STRUCTURAL TAKEOFF WEIGHT AND THE REDUCED TAKEOFF WEIGHT ALLOWED FOR ICING CONDITIONS RESULTING IN AN INADEVERTENT STALL.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- January 30, 1990 · about 2:00 am local time
- Place
- Williston, Vermont · Burlington
- Type
- Accident
- Injuries
- 2 people were killed.
- Weather
- instrument conditions (cloud, fog or low visibility)
- Aircraft
- Cessna 208B · all 208Bs on the register
- Registration
- N4688B · registry record · serial 208B0169
- Damage
- Destroyed
- Flight
- Flight of an unrecorded kind · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT FAILED TO DEICE THE WINGS PRIOR TO THE TAKEOFF AND OVERLOADED THE AIRPLANE BY 360 LBS STRUCTURALLY AND 1100 LBS FOR FLIGHT IN ICING CONDITIONS. THERE WAS MODERATE SNOW FALLING AT THE TIME OF TAKEOFF. THE TAKEOFF ROLL WAS DESCRIBED AS LONG AND A WITNESS SAW THE WINGS ROCKING FROM SIDE TO SIDE AFTER TAKEOFF. THE AIRPLANE STRUCK TREES ONE MILE OFF THE END OF THE RUNWAY, CRASHED AND BURNED. POST ACCIDENT INVESTIGATION FOUND SNOW CONTAMINATION ON THE TOP OF ONE WING THAT DID NOT BURN AND THE TOP OF THE HORIZONTAL STABILIZERS AND ELEVATORS. NO DISCREPANCIES WERE FOUND WITH THE ENGINE OR AIRFRAME.
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, commercial pilot
- Ratings: multi-engine land; single-engine land; single-engine sea; instructor: airplane single-engine; instrument: airplane
- Flight time: 3,110 hours in all; 270 in this make and model
- Medical certificate: Class 1 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 371 hours
- Last inspection: 100-hour inspection; 70 hours since
- Maximum gross weight: 8,750 lb
- Seats: 2
- Landing gear: fixed
- Engine: P&W PT6A-114 (turboprop); 0 hours total
- Fire on the ground
- Operator: Business Air, INC.
The flight
- Destination: ALB Albany NY
- Flight plan: IFR
- Runway 15, 7,807 ft by 150 ft
- A second pilot was aboard
Weather at the time
- Light: night, dark
- Wind: from 080° at 6 knots
- Sky: not recorded
- Temperature: 30°F (-1°C), dew point 30°F (-1°C)
- Altimeter: 29.00 inHg
- Observation at 2:07 am from BTV, 1 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
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.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.