- Date
- August 4, 2021, 15:20 local (20:20 UTC)
- Place
- Mer Rouge, LA
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N455LAAir Tractor AT-602
- Defining event
- Takeoff: Loss of engine power (total)
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Central Region
- Parties
- FAA
- FAA report
- 20210804011539A
- Case key
- 103634
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
The total loss of engine power due to fuel exhaustion. Contributing to the accident was the pilot and ground personnel’s miscalculation of available fuel.
Findings · 3
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.
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 accident occurred on the third aerial application flight of the day. Ground support personnel stated they loaded the airplane with about 480 gallons of insecticide and fertilizer, and about 60 gallons of Jet A-1 fuel, which increased the total fuel load to about 160 gallons prior to takeoff. Shortly after rotation, the airplane engine lost power. The pilot conducted a forced landing to a field. During the forced landing, the airplane impacted a soybean field and came to rest upright. The airplane sustained substantial damage to the fuselage and wings. Postaccident examination of the airplane’s intact fuel system and the accident site found no evidence of fuel. The investigation revealed that the ground personnel and the pilot thought the airplane contained about 160 gallons of fuel prior to takeoff; however, based on the available evidence, it is likely the airplane did not contain fuel, and the engine lost power due to fuel exhaustion.
Factual narrative
On August 4, 2021, about 1520 central daylight time, an Air Tractor AT-602, N455LA, was substantially damaged when it was involved in an accident near Mer Rouge, Louisiana. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 137 aerial application flight. The pilot reported the accident occurred on the third aerial application flight of the day. Ground support personnel loaded the airplane with about 480 gallons of insecticide and fertilizer, and about 60 gallons of Jet A-1 fuel, which increased the total fuel load to about 160 gallons prior to takeoff. Shortly after rotation, the airplane engine lost power. The pilot conducted a forced landing to a field. During the forced landing, the airplane impacted a soybean field and came to rest upright. The airplane sustained substantial damage to the fuselage and wings (see figure 1.) Figure 1. Accident Airplane (Source: law enforcement) According to a Federal Aviation Administration inspector, the airplane’s fuel system was intact, and the wing fuel tanks did not appear to contain any fuel. No evidence of fuel was found at the accident site. In addition, the operator did not have a recordkeeping system of fuel distribution at the refueling location. According to the airplane recovery personnel, the chemical hopper had contained a puncture hole that leaked into one of the fuel tanks. During the recovery process, about 7 to 8 gallons of a fuel/chemical mixture was drained from the fuel tanks. There was no evidence of about 160 gallons of fuel at the accident site or in the airplane fuel tanks.
Aircraft
- Registration
- N455LA
- Reported as
- Air Tractor AT-602
- Category
- Airplane
- Serial number
- 602-1311
- Built
- 2020
- Airframe hours
- 1,200
- Engine
- Pratt & Whitney PT-6A-65AG, 1,350 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Registered owner
- Wilmot Airplane Ventures LLC
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- 100 hour · July 7, 2021
- Equipment
- None
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
- 37
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Without waivers/limitations
- Seat
- Single
- Restraint
- 5-point
- Flight hours
- 10,000 total · 7,500 in this make and model · 1,000 as pilot in command · 350 in the last 90 days · 150 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 60° at 8 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 90 °F, dew point 66 °F
- Altimeter
- 30.02 inHg
- Observed at
- KMLU, 20 nm away
- METAR
- KMLU 042053Z 06008KT 10SM CLR 32/19 A3002 RMK AO2 SLP165 T03170194 58011
Docket · 5
The files NTSB released with the investigation on January 4, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.1 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.