# NTSB GAA18CA057: Karpayev Vladyslav V RV-9, N666BK, Moab, UT, November 24, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: November 24, 2017, 12:00 local (19:00 UTC) - Place: Moab, UT - Coordinates: 38.455276, -109.445556 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.4553&lon=-109.4456&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Defining event: [Taxi: Ground collision](https://openairdocs.org/ntsb-events/200) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report June 14, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 96374 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA057 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/96374/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=96374 - Page: https://openairdocs.org/ntsb/GAA18CA057 ## Probable cause The pilot’s selection of an unsuitable taxiway, which resulted in the wings striking hidden fence posts. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Object/animal/substance: fence/fence post](https://openairdocs.org/ntsb-findings/03022047): Environmental issues › Physical environment · Effect on operation (probable cause); cases with it: [Karpayev Vladyslav V RV-9A, 1 case](https://openairdocs.org/ntsb-findings/03022047/cases.md?model=05627AR), [All aircraft, 313 cases](https://openairdocs.org/ntsb-findings/03022047/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Karpayev Vladyslav V RV-9A, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=05627AR), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Decision related to condition; cases with it: [Karpayev Vladyslav V RV-9A, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=05627AR), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Taxi-from runway: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Karpayev Vladyslav V RV-9A, 1 case](https://openairdocs.org/ntsb-events/470/sequence.md?model=05627AR), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Taxi: Ground collision](https://openairdocs.org/ntsb-events/200) (defining event); cases with it: [Karpayev Vladyslav V RV-9A, 1 case](https://openairdocs.org/ntsb-events/200/sequence.md?model=05627AR), [All aircraft, 618 cases](https://openairdocs.org/ntsb-events/200/sequence.md) ## Analysis According to the pilot in the low-wing, experimental, amateur-built airplane, he landed on a backcountry strip. During the taxi about 15mph, the left wing and the right wing struck separate fence posts. The pilot reported that the fence posts were surrounded by vegetation and not visible. He continued his taxi to parking and shut the engine off. The airplane sustained substantial damage to the leading edge and the ribs on both wings. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative According to the pilot in the low wing, experimental amateur built airplane, he landed on a backcountry strip. During the taxi about 15mph, the left wing and the right wing struck separate fence posts. The pilot reported that the fence posts were surrounded by vegetation and not visible. He continued his taxi to parking and shut the engine off. The airplane sustained substantial damage to the leading edge and the ribs on both wings. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N666BK](https://openairdocs.org/aircraft/N666BK), registered now, S/N 91449, built 2011 (OpenAirDocs) - Reported make and model: KARPAYEV VLADYSLAV V RV-9 (A) - Registry model: [Karpayev Vladyslav V RV-9A](https://openairdocs.org/model/karpayev-vladyslav-v-rv-9a) (registry code 05627AR) (OpenAirDocs) - Registry engine: [Lycoming O-320-D2G](https://openairdocs.org/engine/lycoming-o-320-d2g) (registry code 42154, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 91449 - Year built: 2011 - Airframe hours: 3600 - Engines: Lycoming YO-320-D2G 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, June 20, 2017 - Departed: KTEX, Telluride, UT - Destination: Moab, UT - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review March 15, 2016; seat: left; restraint: 4-point; flight hours: 5,000 total, 3,600 in this make and model, 4,500 as pilot in command, 100 in the last 90 days, 30 in the last 30 days, 6 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 320° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 57 °F, dew point 34 °F - Altimeter: 30.02 inHg - Observed at: KCNY, 23 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 20171124021949A](https://openairdocs.org/incident/20171124021949A), Nov 24, 2017: Karpayev Vladyslav V RV-9A, Moab, UT, Substantial damage. On 11/24/2017, at 1100 MST, N666BK, an experimental amateur built RV9 hit the fence post on landing roll out off airport. There was substantial damage to both… ## Docket (2 files) The files NTSB released with the investigation on April 25, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=96374. 3.8 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40462459&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photos (item 2, .PDF, 2 photos, 283 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40462460&FileExtension=.PDF&FileName=Photos-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.