Mitsubishi MU-2B-20 accident near White Plains, New York, December 7, 1987
On December 7, 1987 at about 10:25 pm local time, a Mitsubishi MU-2B-20, registered N866Q, was substantially damaged in an accident near White Plains, New York (Winchester CO. airport). It was a business flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- December 7, 1987 · about 10:25 pm local time
- Place
- White Plains, New York · Winchester CO. · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Mitsubishi MU-2B-20 · all MU-2B-20s on the register
- Registration
- N866Q · no longer on the register · serial MU-2B-20
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE CROSS COUNTRY BUSINESS FLIGHT WAS UNEVENTFUL FROM CONCORD, NEW HAMPSHIRE TO WHITE PLAINS, NEW YORK UNDER CLEAR SKY. DURING FINAL APPROACH, THE PILOT EXTENDED THE GEAR BUT DID NOT NOTICE THAT THE CIRCUIT BREAKER HAD OPENED AND THE GEAR WAS NOT LOWERED. THE AIRCRAFT LANDED GEAR UP AND THE GEAR DOORS PARTIALLY OPEN. THE GEAR WARNING HORN DID NOT OPERATE. THE PLT STATED THAT HE FAILED TO CHECK FOR 3 GREEN LIGHTS.
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: private
- Ratings: multi-engine land; multi-engine sea; single-engine land; instrument: airplane
- Flight time: 5,525 hours in all; 1,695 in this make and model; 63 in the last 90 days; 5,435 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 5,526 hours
- Last inspection: annual inspection, May 7, 1987; 71 hours since
- Maximum gross weight: 8,930 lb
- Seats: 9
- Landing gear: retractable
- Engine: Garrett TPE-331-151A (turboprop); 0 hours total
The flight
- Departed from: CON Concord NH at 9:30 pm
- Flight plan: none
- Runway 34, 6,550 ft by 150 ft
Weather at the time
- Light: night, dark
- Wind: from 320° at 10 knots
- Visibility: 20 statute miles
- Sky: scat at 20,000 ft
- Temperature: 41°F (5°C), dew point 19°F (-7°C)
- Altimeter: 30.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 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.