Amateur-built Q-2 accident near Billings, Montana, August 8, 1986
On August 8, 1986 at about 9:30 pm local time, a amateur-built Q-2, registered N21QQ, was substantially damaged in an accident near Billings, Montana (Logan Int'L airport). It was a personal 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
- August 8, 1986 · about 9:30 pm local time
- Place
- Billings, Montana · Logan Int'L · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built Q-2
- Registration
- N21QQ · registry record · serial 2005
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
PLT STATED AFTER ACCIDENT THAT HE HAD A MINOR ENG PROBLEM PRIOR TO DEPARTURE FROM BIG TIMBER. HE STATED THAT THE PROBLEM WAS CORRECTED AND THE FLIGHT COMMENCED TO BILLINGS. WHILE ON FINAL APPROACH TO RWY 04 AT BILLINGS THE PLT EXPERIENCED A PARTIAL LOSS OF PWR. HE WAS ABLE TO LAND ON THE RWY BUT BOUNCED THE ACFT SEVERAL TIMES ON TOUCHDOWN. THE PLT WAS UNABLE TO RECOVER AND THE ACFT DEPARTED THE SIDE OF THE RWY. THE DENSITY ALT WAS CALCULATED TO BE 6,344 FT. NO REASON FOR THE PARTIAL LOSS OF PWR COULD BE DETERMINED.
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: single-engine land
- Flight time: 100 hours in all; 17 in this make and model; 27 in the last 90 days; 50 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 250 hours
- Last inspection: annual inspection, July 31, 1986; 20 hours since
- Seats: 1
- Landing gear: fixed
- Engine: Revmaster DT 2100 TURBO (piston); 0 hours total
The flight
- Departed from: 65O Big Timber MT at 8:15 pm
- Flight plan: VFR
- Runway 4, 5,704 ft by 150 ft
Weather at the time
- Light: daylight
- Wind: from 020° at 6 knots
- Visibility: 25 statute miles
- Sky: scat at 11,000 ft
- Temperature: 90°F (32°C), dew point 66°F (19°C)
- Altimeter: 29.00 inHg
- Observation at 9:00 pm from BIL
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.
Other NTSB records under N21QQ the same tail number, which may have belonged to a different aircraft at the time
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.