Grumman G-164B accident near Stockville, Nebraska, July 2, 1989
On July 2, 1989 at about 5:00 pm local time, a Grumman G-164B, registered N6629Q, was substantially damaged in an accident near Stockville, Nebraska. 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
TOTAL FAILURE OF THE POWERPLANT CAUSED BY A BROKEN CYLINDER.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 2, 1989 · about 5:00 pm local time
- Place
- Stockville, Nebraska · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G-164B · all G-164Bs on the register
- Registration
- N6629Q · no longer on the register · serial 155B
- 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 SAID THAT DURING AN AERIAL APPLICATION OPERATION, THE ENGINE SUSTAINED A TOTAL MECHANICAL FAILURE. AN EMERGENCY LDG WAS ATTEMPTED WHICH RESULTED IN SUBSTANTIAL DAMAGE TO THE ACFT AND NO INJURIES TO THE PLT. POST ACCIDENT INVESTIGATION REVEALED A BROKEN CYLINDER TO BE THE CAUSE OF THE ENGINE FAILURE.
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
- Ratings: single-engine land
- Flight time: 5,000 hours in all; 4,600 in this make and model; 200 in the last 90 days; 150 in the last 30 days
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Last inspection: annual inspection
- Maximum gross weight: 4,500 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-985-ANI (piston); 0 hours total
The flight
- Departed from: 47V Curtis NE at 4:30 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 160° at 5 knots
- Visibility: 15 statute miles
- Sky: clear
- Temperature: 84°F (29°C), dew point 57°F (14°C)
- Altimeter: 29.00 inHg
- Observation at 4:55 pm from MCK, 25 miles away
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.