20130505011459A

Accident · Substantial damage

FAA accident report · Air Tractor AT-602 · Udall, KS · May 5, 2013

Date
May 5, 2013 · 22:45 local
Place
Udall, KS
Phase of flight
Maneuver
Operating rules
Agricultural (Part 137)
Operator
TDIG
Damage
Substantial damage
Aircraft
N628JP
NTSB investigation
NTSBCEN13LA263
Reported as
Air Tractor AT-602
Reported engine
Pratt & Whitney Canada PT6A-60AG
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificates
Commercial pilot, flight instructor
Pilot’s flight hours
18,000 total850 in this make and model60 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.

The aircraft was beginning spray operations on a 10 acre wheat field when it struck two residential service electrical power lines. The aircraft sustained damage to propeller creating a vibration and engine oil loss either from the propeller hub or propeller shaft seal. The oil covered the windshield limiting the pilots? Forward visibility.

Immediately following the strike the pilot climbed, turned south and feathered the propeller. He landed approximately ¾ mile south of the point of the wire strike.

The aircraft landed in a pasture with numerous small trees in height of approximately 10 ? 15 feet and trunk diameters of 3 ? 5 inches at the base. The aircraft touched down on a south, southwest heading approximately 520 feet from where it came to rest. From evidence at the scene and pilot statements, the aircraft rolled in a normal attitude for 210 feet where upon the left wing struck a small tree and the aircrafts empennage move to the right. The aircraft continued skidding sideways in the muddy pasture for approximately 100 feet when the fuselage impacted another tree just aft of the wing. The tree caused the main landing gear and tailwheel to lift off the ground for approximately 15 feet. When the aircraft struck the ground, the right wing tip impacted simultaneously with the right main landing wheel, damaging the wing tip and bending the right main axle. The pilot stated that at this point he thought the aircraft may cartwheel. The aircraft skidded sideways approximately 86 feet coming to a rest facing east south east.

The aircraft sustained noticeable damage to the propeller, right and left wing leading edge, right wing tip, right lower fuselage aft of the wing, right main landing gear, left flap, left aileron and spray equipment.

The pilot reported he experienced no injuries.

As the FAA filed it

THE AIRCRAFT WAS BEGINNING SPRAY OPERATIONS ON A 10 ACRE WHEAT FIELD WHEN IT STRUCK TWO RESIDENTIAL SERVICE ELECTRICAL POWER LINES. THE AIRCRAFT SUSTAINED DAMAGE TO PROPELLER CREATING A VIBRATION AND ENGINE OIL LOSS EITHER FROM THE PROPELLER HUB OR PROPELLER SHAFT SEAL. THE OIL COVERED THE WINDSHIELD LIMITING THE PILOTS? FORWARD VISIBILITY.

IMMEDIATELY FOLLOWING THE STRIKE THE PILOT CLIMBED, TURNED SOUTH AND FEATHERED THE PROPELLER. HE LANDED APPROXIMATELY ¾ MILE SOUTH OF THE POINT OF THE WIRE STRIKE.

THE AIRCRAFT LANDED IN A PASTURE WITH NUMEROUS SMALL TREES IN HEIGHT OF APPROXIMATELY 10 ? 15 FEET AND TRUNK DIAMETERS OF 3 ? 5 INCHES AT THE BASE. THE AIRCRAFT TOUCHED DOWN ON A SOUTH, SOUTHWEST HEADING APPROXIMATELY 520 FEET FROM WHERE IT CAME TO REST. FROM EVIDENCE AT THE SCENE AND PILOT STATEMENTS, THE AIRCRAFT ROLLED IN A NORMAL ATTITUDE FOR 210 FEET WHERE UPON THE LEFT WING STRUCK A SMALL TREE AND THE AIRCRAFTS EMPENNAGE MOVE TO THE RIGHT. THE AIRCRAFT CONTINUED SKIDDING SIDEWAYS IN THE MUDDY PASTURE FOR APPROXIMATELY 100 FEET WHEN THE FUSELAGE IMPACTED ANOTHER TREE JUST AFT OF THE WING. THE TREE CAUSED THE MAIN LANDING GEAR AND TAILWHEEL TO LIFT OFF THE GROUND FOR APPROXIMATELY 15 FEET. WHEN THE AIRCRAFT STRUCK THE GROUND, THE RIGHT WING TIP IMPACTED SIMULTANEOUSLY WITH THE RIGHT MAIN LANDING WHEEL, DAMAGING THE WING TIP AND BENDING THE RIGHT MAIN AXLE. THE PILOT STATED THAT AT THIS POINT HE THOUGHT THE AIRCRAFT MAY CARTWHEEL. THE AIRCRAFT SKIDDED SIDEWAYS APPROXIMATELY 86 FEET COMING TO A REST FACING EAST SOUTH EAST.

THE AIRCRAFT SUSTAINED NOTICEABLE DAMAGE TO THE PROPELLER, RIGHT AND LEFT WING LEADING EDGE, RIGHT WING TIP, RIGHT LOWER FUSELAGE AFT OF THE WING, RIGHT MAIN LANDING GEAR, LEFT FLAP, LEFT AILERON AND SPRAY EQUIPMENT.

THE PILOT REPORTED HE EXPERIENCED NO INJURIES.

NTSB investigation

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

Other reports on N628JP · 1

Matched to the same aircraft by N-number and date.