Grumman G-164 accident near Chandler, Arizona, December 5, 1986
On December 5, 1986 at about 6:30 pm local time, a Grumman G-164, registered N671Y, was substantially damaged in an accident near Chandler, Arizona. 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 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 5, 1986 · about 6:30 pm local time
- Place
- Chandler, Arizona
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G-164 · all G-164s on the register
- Registration
- N671Y · no longer on the register · serial 241
- 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 ACFT COLLIDED WITH POWER LINES DURING AN AERIAL APPLICATION FLIGHT. THE PILOT HAD MADE SEVERAL PASSES PRIOR TO THE ACCIDENT AND NOTICED THE WIRES EACH TIME. VISIBILITY WAS GOOD, IT WAS DAYLIGHT CONDITIONS, AND THERE WERE NO MECHANICAL PROBLEMS.
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: 3,160 hours in all; 1,800 in this make and model; 182 in the last 90 days; 3,160 as pilot in command
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 3,977 hours
- Last inspection: 100-hour inspection, May 12, 1986
- Maximum gross weight: 3,750 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-985 (piston); 0 hours total
The flight
- Departed from: Chandler AZ at 6:20 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 20 statute miles
- Sky: not recorded at 10,000 ft; not recorded
- Temperature: 66°F (19°C), dew point 0°F (-18°C)
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.