Grumman G-164A accident near New Boston, Illinois, August 7, 2005
On August 7, 2005 at about 1:00 am local time, a Grumman G-164A, registered N9041M, was destroyed in an accident near New Boston, Illinois. It was a positioning flight under agricultural flying rules (Part 137). 1 person had minor injuries. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
The loss of engine power due to a cylinder failure and the unsuitable terrain encountered by the pilot during the forced landing.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 7, 2005 · about 1:00 am local time
- Place
- New Boston, Illinois · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G-164A · all G-164As on the register
- Registration
- N9041M · registry record · serial 1703
- Damage
- Destroyed
- Flight
- Positioning flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
The agricultural spray airplane sustained substantial damage when it impacted the terrain after a loss of engine power during cruise flight. The pilot reported that he had finished spraying his last field for the day and was heading back to the airport when the engine lost power and oil pressure. Smoke began pouring into the cockpit. He reported that he was over a wooded area, but he managed to make a forced landing in a cornfield. The airplane impacted the terrain and skidded up on its nose. The inspection of the airplane revealed that one of the engine cylinders had failed. Aircraft records indicated that the 600 horsepower Pratt & Whitney R-1340-AN-2 engine had accumulated 1,026 hours since the last overhaul. The engine had accumulated 157 hours since the last annual inspection.
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; instrument: airplane
- Flight time: 11,800 hours in all; 4,000 in this make and model; 11,800 as pilot in command
- Last flight review: February 1, 2004
- Medical certificate: Class 2
- Seat: ctr
- Injury: minor injuries
The aircraft
- Airframe total time: 10,409 hours
- Last inspection: annual inspection, January 1, 2005; 157 hours since
- Seats: 1
- Landing gear: fixed
- Engine: Pratt & Whitney 1340 AN-2 (piston); 0 hours total
- Fire on the ground
The flight
- Departed from: C00 Aledo IL
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: at 0 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 55°F (13°C)
- Altimeter: 30.06 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number CHI05LA220.