# NTSB WPR14CA022: Collins Zenith Stol CH 701, N2849C, Deer Park, WA, October 19, 2013 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 19, 2013, 13:00 local (20:00 UTC) - Place: Deer Park, WA - Coordinates: 47.966945, -117.423889 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.9669&lon=-117.4239&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Abnormal runway contact](https://openairdocs.org/ntsb-events/090) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report April 1, 2014 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: FAA - NTSB case key (mKey): 88250 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR14CA022 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/88250/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=88250 - Page: https://openairdocs.org/ntsb/WPR14CA022 ## Probable cause The pilot's inadequate flare and failure to maintain control of the airplane during the landing with a tailwind. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: landing flare](https://openairdocs.org/ntsb-findings/01062041): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Collins Arthur F ZENITH STOL CH 701, 1 case](https://openairdocs.org/ntsb-findings/01062041/cases.md?model=056268K), [All aircraft, 1,285 cases](https://openairdocs.org/ntsb-findings/01062041/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Collins Arthur F ZENITH STOL CH 701, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=056268K), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Effect on equipment; cases with it: [Collins Arthur F ZENITH STOL CH 701, 1 case](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=056268K), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Abnormal runway contact](https://openairdocs.org/ntsb-events/090) (defining event); cases with it: [Collins Arthur F ZENITH STOL CH 701, 1 case](https://openairdocs.org/ntsb-events/090/sequence.md?model=056268K), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Collins Arthur F ZENITH STOL CH 701, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=056268K), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot stated that during the landing flare, the airplane encountered a tailwind that caused the airplane to rapidly descend and land hard. The airplane touched down on all three wheels and then began to encounter pitch oscillations that caused the nose wheel to collapse. Subsequently the airplane nosed over which resulted in substantial damage to both wings. The pilot reported no preexisting mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The pilot stated that during the landing flare, the airplane encountered a tailwind that caused the airplane to rapidly descend and land hard. The airplane touched down on all three wheels and then began to encounter pitch oscillations that caused the nose wheel to collapse. Subsequently the airplane nosed over which resulted in substantial damage to both wings. The pilot reported no preexisting mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N2849C](https://openairdocs.org/aircraft/N2849C), registered now, S/N 7084, built 2010 (OpenAirDocs) - Reported make and model: COLLINS ZENITH STOL CH 701 (NO SERIES) - Registry model: [Collins Arthur F ZENITH STOL CH 701](https://openairdocs.org/model/collins-arthur-f-zenith-stol-ch-701) (registry code 056268K) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 7084 - Year built: 2010 - Airframe hours: 20 - Engines: Great Plains Type I 103 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special); Special, Experimental light sport (Special) - Last inspection: Annual, December 16, 2012 - Departed: DEW, Deer Park, WA - Destination: DEW, Deer Park, WA - Airport: DEW, Deer Park, runway 22, 1,800 × 60 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 64; injuries: none; sport pilot; airplane ratings: single-engine land; medical: sport pilot, unknown; last flight review October 27, 2011; seat: left; restraint: 3-point; flight hours: 71.1 total, 24.6 in this make and model, 23.7 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 54 °F, dew point 37 °F - Altimeter: 30.12 inHg - Observed at: DEW ## Docket (1 files) The files NTSB released with the investigation on March 28, 2014, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=88250. 4.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 4.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40408409&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.