# NTSB CEN16LA316: Schabacker Konrad J Acro Sport II, N6214C, Winterset, IA, August 9, 2016 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 9, 2016, 15:00 local (20:00 UTC) - Place: Winterset, IA - Coordinates: 41.364723, -94.024169 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.3647&lon=-94.0242&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report September 6, 2017 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA - NTSB case key (mKey): 93805 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN16LA316 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/93805/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=93805 - Page: https://openairdocs.org/ntsb/CEN16LA316 ## Probable cause The pilot’s failure to maintain directional control of the airplane during the landing roll, which resulted in an on-ground collision with two parked airplanes. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Schabacker Konrad J ACRO SPORT II, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=056223C), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Schabacker Konrad J ACRO SPORT II, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=056223C), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Object/animal/substance: aircraft](https://openairdocs.org/ntsb-findings/03022040): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Schabacker Konrad J ACRO SPORT II, 1 case](https://openairdocs.org/ntsb-findings/03022040/cases.md?model=056223C), [All aircraft, 116 cases](https://openairdocs.org/ntsb-findings/03022040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Schabacker Konrad J ACRO SPORT II, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=056223C), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Schabacker Konrad J ACRO SPORT II, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=056223C), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The commercial pilot was landing the airplane during a cross-country flight. The pilot reported that, during the landing roll, the airplane veered left. The pilot straightened the airplane and added power to go around, but the airplane again veered left, traveled off the side of the runway, and impacted two airplanes parked on the ramp. A postaccident examination of the airplane confirmed the pilot's report that there were no mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Factual narrative On August 9, 2016, at 1600 central daylight time, an amateur-built Schabacker Konrad J Acro Sport II, N6214C, collided with two parked airplanes following a loss of control while landing at the Winterset Municipal Airport (3Y3), Winterset, Iowa. Neither the airline transport pilot (ATP) pilot nor the airplane owner/pilot rated-passenger were injured. The airplane was substantially damaged. The aircraft was registered to the pilot-rated passenger and it was being operated under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The flight originated from the Mason City Municipal Airport (MCW), Mason City, Iowa, at 1340.The airplane owner had recently purchased the airplane and had the pilot fly the airplane because the airplane owner did not hold an endorsement to fly tailwheel equipped airplanes. The pilot had a total flight time of 2.5 hours in the accident airplane. The pilot reported they overflew the airport, checked the windsock, and noted the wind was calm so they decided to land on runway 32. Shortly into the landing roll, the airplane began to veer to the left. The pilot straightened the airplane and added engine power to initiate an aborted landing. The airplane once again veered to the left and traveled down an embankment before it collided with two unoccupied parked airplanes on the ramp which were: N601FA, an Aerostar 601P, and N31EG, a Piper PA-23-250. The pilot reported the local wind was calm at the time of the landing. The winds recorded at Des Moines International Airport, Des Moines, Iowa, located about 22 miles northeast of 3Y3, were from 150 degrees at 6 knots. A postaccident examination of the landing gear and brakes was conducted by a Federal Aviation Administration inspector. The inspector reported that he did not find any anomalies that would have prevented the pilot's ability to maintain directional control of the airplane. In addition, the pilot reported that there was no mechanical failure/malfunction of the airplane. ## Aircraft - Registration: [N6214C](https://openairdocs.org/deregistered/N6214C-2018-04-11), registration cancelled 2018-04-11, S/N KJS 1993, built 1994 (OpenAirDocs) - Reported make and model: SCHABACKER KONRAD J ACRO SPORT II (NO SERIES) - Registry model: [Schabacker Konrad J ACRO SPORT II](https://openairdocs.org/model/schabacker-konrad-j-acro-sport-ii) (registry code 056223C) (OpenAirDocs) - Registry engine: [Lycoming O-360-A1D](https://openairdocs.org/engine/lycoming-o-360-a1d) (registry code 42250, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: KJS 1993 - Year built: 1994 - Airframe hours: 88.5 - Engines: LYCOMING O-360-A1D 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, May 18, 2016 - Departed: MCW, Mason City, IL - Destination: 3Y3, Winterset, IA - Airport: 3Y3, Winterset Muni, runway 32, 3,002 × 50 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; injuries: none; commercial, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review March 12, 2016; seat: rear; restraint: 5-point; flight hours: 7,854 total, 2.5 in this make and model, 4,806 as pilot in command, 107 in the last 90 days, 22 in the last 30 days, 2.5 in the last 24 hours - Pilot-rated passenger; age 55; injuries: none; private; airplane ratings: single-engine land; medical: class 1, with waivers/limitations; last flight review February 2, 2006; seat: front; restraint: 4-point; flight hours: 447 total, 0 in this make and model, 447 as pilot in command, 9.1 in the last 90 days, 5.5 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 72 °F - Altimeter: 29.95 inHg - Observed at: DSM, 22 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 20160809014231A](https://openairdocs.org/incident/20160809014231A), Aug 9, 2016: Schabacker Konrad J ACRO SPORT II, Winterset, IA, Substantial damage. The crew of N6214C elected to land on rwy 32 for a full stop to get fuel. After touching down the aircraft swerved left and departed the runway onto the grass.… ## Docket (2 files) The files NTSB released with the investigation on August 8, 2017, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=93805. 1.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40454970&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Record of Interviews (item 2, .PDF, 94 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40454971&FileExtension=.PDF&FileName=Record%20of%20Interviews-Master.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.