Air Tractor AT802 N396LA

Summary

On 22 July 2011 at about 19:00 local time, a Air Tractor AT802 registered N396LA, operated by Thompson Flying Service LLC, was involved in an accident near Ullin, Illinois, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

22 July 2011 at 19:00

Classification

Accident

Location

Ullin, Illinois, United States

Coordinates

37.3219, -89.1319

Aircraft

Air Tractor AT802

Registration

N396LA

Category

Airplane

Engines

1

Operator

Thompson Flying Service LLC

Operating rule

Part 137: Agricultural

Purpose of flight

Aerial Application

Phase of flight

Not recorded

Route

Flora → Ullin

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN11LA544

1 person had minor injuries.

The loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot reported that the airplane’s engine surged and lost power during cruise flight. The pilot stated that he was unable to attain a climb rate and that the emergency procedures he used did not affect the surging or loss of engine power. The pilot landed the airplane on a field immersed in water. An examination of the engine and overspeed governor did not identify any anomalies that would account for surging or a loss of engine power. The internal corrosion found on examination of the overspeed governor was most likely due to its water immersion after the accident.

Quoted verbatim from the NTSB record.