Schweizer G167B accident near Borup, Minnesota, July 27, 1993
On July 27, 1993 at about 11:30 pm local time, a Schweizer G167B, registered N6637Q, was substantially damaged in an accident near Borup, Minnesota. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). 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 loss of engine power due to a cracked cylinder head.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 27, 1993 · about 11:30 pm local time
- Place
- Borup, Minnesota · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Schweizer G167B
- Registration
- N6637Q · no longer on the register · serial 167
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT REPORTED THE AIRPLANE LOST ENGINE POWER DURING AN AERIAL APPLICATION SPRAY RUN. HE MADE A FORCED LANDING ON A SOFT FIELD AND THE AIRPLANE NOSED OVER. EXAMINATION OF THE ENGINE REVEALED THAT THE NUMBER SEVEN CYLINDER HEAD WAS CRACKED BETWEEN THE SPARK PLUGS.
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: commercial pilot, private
- Ratings: single-engine land; instrument: airplane
- Flight time: 3,500 hours in all; 3,000 in this make and model; 185 in the last 90 days
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: frt
The aircraft
- Airframe total time: 8,385 hours
- Last inspection: annual inspection, May 10, 1993; 213 hours since
- Maximum gross weight: 6,500 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R1340 (piston); 0 hours total
The flight
- Departed from: Ada MN
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 110° at 5 knots
- Visibility: 15 statute miles
- Sky: clear
- Temperature: 90°F (32°C), dew point 61°F (16°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.
Other NTSB records under N6637Q 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.