Pilot Debrief

GRUMMAN G-164A near Yerington, NV — 2009-06-18

Final reportWPR09LA270
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Date
2009-06-18
Location
Yerington, NV, USA
Aircraft
GRUMMAN G-164A
Registration
N9723
Category
Airplane
Highest injury
Minor
Fatalities
0
Phase of flight
Maneuvering

Probable cause

The pilot's failure to maintain aircraft control while maneuvering during an aerial application flight.

NTSB narrative

The pilot reported that after completing a spray run he was maneuvering for another run and rolled the wings level. The airplane experienced a loss of aileron control and settled toward the ground. The pilot still had pitch control, so he lowered the nose to maintain airspeed until he was able to regain aileron control. Prior to ground impact, the pilot attempted to flare to cushion the impact. The airplane landed hard, and during the landing roll it came to a sudden stop and nosed over. A Federal Aviation Administration inspector inspected the airplane and engine on scene. Flight control continuity was established, as well as mechanical continuity of the engine; there were no mechanical anomalies found that would have precluded normal operation.

Analysis

Primary failure mode
Loss of control
First missed decision gate
Pilot could have avoided the maneuver that led to loss of aileron control.

NTSB coding

Evidence available

  • 4 docket documents
View NTSB final reportView NTSB docket

Docket documents4

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