# NTSB CHI98LA202: Air Tractor AT-301, N36576, Risco, MO, June 16, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 15, 1998, 19:30 local (Jun 16, 1998, 00:30 UTC) - Place: Risco, MO - Coordinates: 36.549873, -89.810478 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.5499&lon=-89.8105&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report February 15, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 10916 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI98LA202 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10916/pdf - Page: https://openairdocs.org/ntsb/CHI98LA202 ## Probable cause the pilot's abrupt application of the brakes. Factors contributing to this accident were the pilot's inadequate preflight preparation, his delayed decision to abort the takeoff, and the soft field. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Nose over, takeoff - aborted - brakes(normal) - abrupt, pilot in command (cause) - preflight planning/preparation - improper, pilot in command (contributing factor) - abort - delayed, pilot in command (contributing factor) - airport facilities,runway/landing area condition - soft (contributing factor) ## Analysis The pilot said the airstrip was made up of very thick sod that was a little soft. The airplane had 2,000 pounds of chemical on board. The pilot said that during the takeoff roll, he noticed that he could not reach takeoff speed. He said he waited too late to stop. The pilot quickly applied the brakes. The airplane 'went end over.' Examination of the wreckage revealed no anomalies. ## Factual narrative On June 15, 1998, at 1930 central daylight time (cdt), an Air Tractor, AT-301, N36576, operated by a commercial pilot, sustained substantial damage when during initial takeoff roll, the pilot elected to abort the takeoff. During brake application the airplane nosed over. Visual meteorological conditions prevailed at the time of the accident. The aerial application flight was being conducted under 14 CFR Part 137. No flight plan was on file. The pilot reported no injuries. The local flight was originating from a privately-owned airstrip, 3 miles north of Risco, Missouri. In his written statement, the pilot said the airstrip was made up of very thick sod that was a little soft. The airplane had 2,000 pounds of chemical on board. The pilot said that during the takeoff roll, he noticed that he could not reach takeoff speed. He said he waited too late to stop. The pilot quickly applied the brakes. The airplane "went end over." A Federal Aviation Administration (FAA) inspector examined the wreckage at the site. The aircraft rested inverted on the airstrip. The front part of the upper cowling was crushed inward and aft. The engine and engine mounts were bent downward. The front windscreen was broken out. The right wing was bent upward at mid-span. The right wing's forward spar was broken. The left horizontal stabilizer and elevator were broken off at the root. The airplane's rudder was broken off. The propeller showed torsional bending and chordwise scratches. Flight control continuity was confirmed. No anomalies were found with the airplane's engine, engine controls, or other airplane systems. ## Aircraft - Registration: [N36576](https://openairdocs.org/deregistered/N36576-2018-01-18), registration cancelled 2018-01-18, S/N 301-0317, built 1980 (OpenAirDocs) - Reported make and model: Air Tractor AT-301 - Registry model: [Air Tractor AT-301](https://openairdocs.org/model/air-tractor-at-301) (registry code 0390103) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 301-0317 - Airframe hours: 6500 - Engines: P&W 1350 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Ricky L. & Laura Dale Mccord - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, April 5, 1998, 40 hours before - Airport: Private-James Stewart, runway 27, 2,640 × 100 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 42; flight instructor, commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 7,500 total, 2,450 in this make and model, 7,410 as pilot in command, 175 in the last 90 days, 75 in the last 30 days, 10 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 11 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 70 °F, dew point 63 °F - Altimeter: 29.00 inHg - Observed at: CGI, 40 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19980616014009A](https://openairdocs.org/incident/19980616014009A), Jun 16, 1998: Airtrc AT301, Risco, MO, Substantial damage. Takeoff run soft sod. Too slow aborted. Braked and nosed over. Failed note field and wind conditions. (.4)the pilot said the airstrip was made up of very thick… 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. --- 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.