20230721009349A

Accident · Substantial damage

FAA accident report · Air Tractor AT-602 · Plains, KS · July 21, 2023

Date
July 21, 2023 · 11:00 local
Place
Plains, KS
Airport
Plains Municipal Airport
Phase of flight
Takeoff: Departure Roll
Operating rules
Agricultural (Part 137)
Operator
RHSG
Damage
Substantial damage
Aircraft
N602AA
NTSB investigation
NTSBCEN23LA321
Reported as
Air Tractor AT-602
Reported engine
Pratt & Whitney Canada PT6A-60AG
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Commercial pilot
Pilot’s flight hours
30,000 total25,000 in this make and model320 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

On 7-21-23 at approximately 1100 local time operator was attempting to take off from Plains KS muncipal airport runway 35. It had rained 1”80 hundredths the previous night. That morning the airstrip was inspected by company personnel who determined it was too wet to operate loaded out of this airport. The decision was made to fly the airplane out empty and reposition it to work out of nearby liberal airport for the day. However, the standing water in the middle of the strip was deeper than it appeared so during takeoff the pilot attempted to use the right edge of the runway to avoid the puddles. During take off roll, the aircraft powered through a water hole with the right front main tire causing the aircraft to yaw right dragging the right wingtip and spray boom through the tall weeds located past the edge of the runway. This in turn pulled the plane and wing down causing it to ground loop. 180 degres into the ground loop, the tail wheel then dug into the ground. The momentum from the aircraft moving backwards and the tail wheel digging into the ground caused the tail empannage to fold to the right thus causing substantial damage to the tail, left outboard wing, tail wheel assembly and all spray booms.

As the FAA filed it

ON 7-21-23 AT APPROXIMATELY 1100 LOCAL TIME OPERATOR WAS ATTEMPTING TO TAKE OFF FROM PLAINS KS MUNCIPAL AIRPORT RUNWAY 35. IT HAD RAINED 1”80 HUNDREDTHS THE PREVIOUS NIGHT. THAT MORNING THE AIRSTRIP WAS INSPECTED BY COMPANY PERSONNEL WHO DETERMINED IT WAS TOO WET TO OPERATE LOADED OUT OF THIS AIRPORT. THE DECISION WAS MADE TO FLY THE AIRPLANE OUT EMPTY AND REPOSITION IT TO WORK OUT OF NEARBY LIBERAL AIRPORT FOR THE DAY. HOWEVER, THE STANDING WATER IN THE MIDDLE OF THE STRIP WAS DEEPER THAN IT APPEARED SO DURING TAKEOFF THE PILOT ATTEMPTED TO USE THE RIGHT EDGE OF THE RUNWAY TO AVOID THE PUDDLES. DURING TAKE OFF ROLL, THE AIRCRAFT POWERED THROUGH A WATER HOLE WITH THE RIGHT FRONT MAIN TIRE CAUSING THE AIRCRAFT TO YAW RIGHT DRAGGING THE RIGHT WINGTIP AND SPRAY BOOM THROUGH THE TALL WEEDS LOCATED PAST THE EDGE OF THE RUNWAY. THIS IN TURN PULLED THE PLANE AND WING DOWN CAUSING IT TO GROUND LOOP. 180 DEGRES INTO THE GROUND LOOP, THE TAIL WHEEL THEN DUG INTO THE GROUND. THE MOMENTUM FROM THE AIRCRAFT MOVING BACKWARDS AND THE TAIL WHEEL DIGGING INTO THE GROUND CAUSED THE TAIL EMPANNAGE TO FOLD TO THE RIGHT THUS CAUSING SUBSTANTIAL DAMAGE TO THE TAIL, LEFT OUTBOARD WING, TAIL WHEEL ASSEMBLY AND ALL SPRAY BOOMS.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.