CEN24LA364

NTSB accident investigation · Grumman G-164A · LaPlace, LA · September 21, 2024

Accident · No injuriesClass 4 · LimitedFinal report
Date
September 21, 2024, 09:15 local (14:15 UTC)
Place
LaPlace, LA · sugar cane field
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N6565Grumman G-164A
Defining event
Enroute: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA Flight Standards
FAA report
20240921013969A
Case key
195162

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

Total loss of engine power during the agricultural application flight for reasons that could not be determined.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Not determinedNot determined › Not determined · Unknown/Not determinedGrumman G-164A: 7 casesAll aircraft: 2,247 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported he had just completed an agricultural application pass and had entered a turn to setup for the next pass, when he heard a “pop” from the engine and felt the airplane slow down. His efforts to restore engine power were not successful. He dumped the application load and executed a forced landing to a road. After touching down, he maneuvered the airplane to avoid a tractor parked along the side of the road. Unfortunately, the left wing struck the sugar cane crop adjacent to the road causing damage to the lower wings, wing struts, and landing gear. A postaccident examination of the airframe and engine did not identify any preimpact anomalies consistent with an inability of the engine to produce rated power.

Aircraft

Registration
N6565
Reported as
Grumman G-164A
Category
Airplane
Serial number
722
Built
1970
Airframe hours
7,975
Engine
Pratt & Whitney R1340-53H1G, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Ag Air Inc
Registered owner
Ag Air Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 12, 2024 · 48 hours before
Departed
L83 · Thibodaux, LA
Destination
L83 · Thibodaux, LA
Airport
N/A · N/A
Equipment
Angle of attack indicator

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
March 12, 2024
Seat
Single
Restraint
3-point
Flight hours
2,737 total · 2,594 in this make and model · 2,737 as pilot in command · 112 in the last 90 days · 61 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 7 knots
Visibility
11 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 77 °F
Altimeter
29.95 inHg
Observed at
KMSY, 11 nm away
METAR
METAR KMSY 211353Z 01007KT 10SM FEW055 28/25 A2995

Docket · 6

The files NTSB released with the investigation on January 10, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 78.4 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.