Aviation Crash Map

Grumman Acft Eng Cor G-164A N9822

1 August 2012 · La Salle, Colorado, United States · Minor injuries

Summary

On 1 August 2012 at about 15:20 local time, a Grumman Acft Eng Cor G-164A registered N9822, operated by LOW Level Dusting Co Inc, was involved in an accident near La Salle, Colorado, 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.

The record

Date
at 15:20
Classification
Accident
Location
La Salle, Colorado, United States
Nearest airport
Low Level Strip (NONE)
Coordinates
40.3386, -104.6678
Aircraft
Grumman Acft Eng Cor G-164A
Registration
N9822
Category
Airplane
Engines
1
Operator
LOW Level Dusting Co Inc
Operating rule
Part 137: Agricultural
Purpose of flight
Aerial Application
Phase of flight
Not recorded
Route
La Salle → La Salle
Aircraft damage
Substantial
Weather
VMC
Light
Day
NTSB number
CEN12LA513

People

1 person had minor injuries.

On board Died Serious Minor Uninjured
1 0 0 1 0

Probable cause

The loss of engine power due to the detached distributor rotor.

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

Read the full NTSB narrative

The pilot stated that shortly after takeoff for the aerial application flight, the airplane’s engine ”popped and banged.” The pilot decided to jettison the airplane’s load and return to land at the departure airport. However, while returning to the airport, the engine began to surge repeatedly between full power and a total loss of power, and the pilot decided to land in a nearby alfalfa field, where the airplane nosed over during the forced landing. Examination of the engine revealed that a screw that secured the distributor rotor to the brass gear had come out, which resulted in the detached rotor moving loosely inside the magneto. Internal damage to the rotor and magneto was consistent with the rotor rubbing inside of the magneto. This distributor rotor separation and subsequent movement most likely resulted in the rough running engine and the subsequent loss of engine power.

Quoted verbatim from the NTSB record.

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