# NTSB WPR10CA329: Cornett Steven M Glastar, N51MW, Smiley Creek, ID, June 27, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 26, 2010, 20:00 local (Jun 27, 2010, 02:00 UTC) - Place: Smiley Creek, ID - Coordinates: 43.912223, -114.796112 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.9122&lon=-114.7961&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report October 21, 2010 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 76537 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR10CA329 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76537/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76537 - Page: https://openairdocs.org/ntsb/WPR10CA329 ## Probable cause The pilot's decision to not use all available runway length and his delay in aborting the takeoff, which resulted in the airplane sliding off the end of the grass strip and colliding with a ditch. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=056064D), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=056064D), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Runway/land/takeoff/taxi surface: wet surface](https://openairdocs.org/ntsb-findings/03023010): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-findings/03023010/cases.md?model=056064D), [All aircraft, 141 cases](https://openairdocs.org/ntsb-findings/03023010/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=056064D), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Airport facilities/design: runway/landing area length](https://openairdocs.org/ntsb-findings/03017037): Environmental issues › Operating environment · Decision related to condition (probable cause); cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-findings/03017037/cases.md?model=056064D), [All aircraft, 34 cases](https://openairdocs.org/ntsb-findings/03017037/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=056064D), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Takeoff-rejected takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cornett Steven M GLASTAR, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=056064D), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that he had been landing and departing from the grass strip numerous times earlier in the day. For the accident flight, he was attempting to perform a midfield takeoff. During the departure roll, the airplane momentarily became airborne and then settled back into the wet grass and slowed. He opted to immediately abort the takeoff by retarding the throttle control and applying brakes. The airplane then slid off the end of the grass strip and collided with a ditch, incurring damage to the right wing and tail. The pilot reported no pre impact mechanical malfunctions or failures with the airframe or engine. ## Factual narrative The pilot reported that he had been landing and departing from the grass strip numerous times earlier in the day. For the accident flight, he was attempting to perform a midfield takeoff. During the departure roll, the airplane momentarily became airborne and then settled back into the wet grass and slowed. He opted to immediately abort the takeoff by retarding the throttle control and applying brakes. The airplane slid off the end of the grass strip and collided with a ditch, incurring damage to the right wing and tail. The pilot reported no pre impact mechanical malfunctions or failures with the airframe or engine. ## Aircraft - Registration: [N51MW](https://openairdocs.org/deregistered/N51MW-2019-01-18), registration cancelled 2019-01-18, S/N 5586, built 2001 (OpenAirDocs) - Reported make and model: CORNETT STEVEN M GLASTAR - Registry model: [Cornett Steven M GLASTAR](https://openairdocs.org/model/cornett-steven-m-glastar) (registry code 056064D) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 5586 - Airframe hours: 498 - Engines: LYCOMING O&VO-360 SER 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Beery Douglas W - Registered owner: Beery Douglas W - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, March 3, 2010, 111 hours before - Departed: U87, Smiley Creek, ID - Destination: U87, Smiley Creek, ID - Airport: U87, Smiley Creek, runway 14, 4,900 × 150 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 40; injuries: none; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, without waivers/limitations; last flight review October 16, 2009; seat: left; flight hours: 510 total, 96 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 310° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 36 °F - Altimeter: 30.14 inHg - Observed at: KSNT, 16 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 20100626037539A](https://openairdocs.org/incident/20100626037539A), Jun 26, 2010: Cornett Ste GLASTAR, Smiley Creek, ID, Substantial damage. Pilot was conducting multiple takeoffs and landings with different passengers during fly-in event at this airport. On third flight, pilot departed mid-field… ## Docket (1 files) The files NTSB released with the investigation on July 19, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76537. 298 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 298 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40332982&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF 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.