# Accident 20110823018369A: Air Tractor Inc AT-400, Monago, ND, August 23, 2011 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: August 23, 2011, 19:30 local time - Place: Monago, ND - Airport: Edgeley Municipal - Damage: Destroyed - Phase of flight: Maneuver - Operating rules: Agricultural (Part 137) - Operator: XUDG - Location: 46.1836° N, 98.5078° W: From the FAA - Nearby events: https://openairdocs.org/map.md?lat=46.1836&lon=-98.5078&mi=10 - Aircraft: N23720, a cancelled registration (https://openairdocs.org/deregistered/N23720-2018-01-16) (OpenAirDocs) - Registry model: Air Tractor AT-400 (registry code 0390202, https://openairdocs.org/model/air-tractor-at-400) (OpenAirDocs) - Registry engine: Pratt & Whitney PT6A series (registry code 52034, https://openairdocs.org/engine/pratt-whitney-pt6a-series) (OpenAirDocs) - Reported make and model: AIR TRACTOR INC AT-400 - Reported engine: P&W PT6A SERIES - People aboard: 1 - Fatal injuries: 0 - Other injuries: 1 - Pilot certificates: Commercial pilot - NTSB investigation: [NTSB CEN11LA593](https://openairdocs.org/ntsb/CEN11LA593) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20110823018369A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. PILOT WAS SPRAYING FIELD NE OF MONAGO NDIN A "RACE TRACK" TYPE SPRAY PATTERN. SPRAYED 3 FIELDS GOING EAST AND WEST NORTH OF 85TH ST, THEN WAS SPRAYING LAST FIELDS NORTH AND SOUTH. SOUTH OF 85TH ST.ACCORDING TO THE PILOT HE DOES NOT REMEBER THE ACCIDENT ONLY THAT HE WAS COMING IN TO SPRAY THE LAST PASS.AIRCRAFT STRUCK TREE NORTH OF FIELD BEING SPRAYED, WITH RIGHT WING TIP WHICH CAUSED THE OUTBOARD 3 FEET OF THE WING TO DEPART. DEBRIS FIELD WAS FROM TREE TO THE NORTHWEST IN THE DIRECTION OF WHERE THE AIRCRAFT CAME TO REST. TREE LIMBS AND AIRCRAFT PARTS WERE SPREAD OUT ABOUT 300'. AIRCRAFT CRASHED HEADING SOUTH ON THE SOUTH SIDE OF 85TH ST. DITCH. NO IMPACT MARKS NOTED ON ROAD WAY AND POWER LINES ON NORTH SIDE OF ROAD WERE NOT HIT. NO POST CRASH FIRE, NO FUEL SMELL AT SCENCE NEXT MORNING WHEN FAA PERSONAL ARRIVED. LIGHT CHEMICAL SMELL PRESENT. AIRCRAFT FUSELAGE HAD BEEN HAD BEEN REMOVED FROM CRASH SITE TUESDAY NIGHT. WINGS, ENGINE AND LANDING GEAR ALONG WITH FINAL CLEAN UP WAS IN PROGRESS WHEN FAA INSPECTORS ARRIVED, WING TIP AND TREE LIMBS WERE STILL UNDISTURBED. GOUND IMPACT MARKS WERE MADE BY LEFT WING AND NOSE OF AIRCRAFT.INSPECTION OF RIGHT WING SHOWED SIGNS OF TREE INPACT AS FAR IN AS ABOUT 6' FROM TIP. ONE PROPELLER BLADE WAS FOUND ABOUT 50' FORWARD AND TO THE RIGHT ABOUT THE 2 O'CLOACK POSITION FROM THE AIRCRAFT BROKEN AT THE HUB AND ABOUT 6" FROM TIP. MINOR CHORD WISE SCRAPES AND MUD SPRAY. GARMIN GPS 196 WAS DISCOVED IN AIRCRAFT WHICH SHOWED FLIGHT PATH. SATCOM GPS CARD REMOVED FROM RECEIVER AND BOTH SENT TO NTSB.ENIGNE INSPECTION REVELED PROPELLER SHAFT BROKEN OFF, POWER SECTION BROKEN OFF OF THE ENGINE AND BURNER CAN BEND DOWNWORD AND PRATIALY TORN OFF AT C FLANGE. FUEL CONTROL WAS BROKE APART. FCU FLYWEIGHTS ALONG WITH PUMP TO FCU DRIVE SHAFT SHOWED SIGNS OF ROATION. FUEL FILTER BOWL WAS REMOVED AND FOUND TO HAVE FUEL IN IT. SAMPLE WAS TAKING, AND FILTER ALSO PULLED. HIGH PRESSURE FILTER REMOVED, FUEL NOTED THERE AS WELL AND FILTER RMOVED. SUPPLY LINE AT FLOW DIVIDER PULLED AND FUEL WAS FOUND IN LINE.PILOT SUBUSTAINED INJURIES TO FACE, ANKLE AND RIBS, BUT WAS ABLE TO GET OUT OF THE AIRCRAFT AND CALL FOR HELP. ## The NTSB's investigation of this event (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB CEN11LA593](https://openairdocs.org/ntsb/CEN11LA593), Aug 23, 2011: Air Tractor AT-400 (N23720), Monango, ND, substantial damage. Probable cause: The pilot did not maintain adequate separation from a tree during the aerial-application flight. ## Other reports on N23720 (1) Matched to the same aircraft by N-number and date. - [Accident 20060731017019A](https://openairdocs.org/incident/20060731017019A), Jul 31, 2006: Airtrc AT400 (N23720), Springfield, MN, Substantial damage. (-23) Aircraft was landing on a Private airstip 7 miles n of Springfield, MN. As the aircraft touched down the pilot believes the tail wheel assembly failed… From the FAA Accident/Incident Data System. Reports are matched to registry aircraft 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. For accidents, the NTSB's own investigation is the fuller record. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.