# NTSB GAA17CA039: Evolution Revo, N31PH, Carson City, NV, October 20, 2016 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 20, 2016, 08:15 local (15:15 UTC) - Place: Carson City, NV - Coordinates: 39.195556, -119.735 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.1956&lon=-119.7350&mi=10 - Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping) - Defining event: [Standing-engine(s) start-up: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report December 15, 2016 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 94270 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA039 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/94270/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=94270 - Page: https://openairdocs.org/ntsb/GAA17CA039 ## Probable cause The pilot receiving instruction's inadvertent application of throttle during the engine start, which led to an inadvertent acceleration and a roll-over. ## 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 · Student/instructed pilot (probable cause); cases with it: [Evolution REVO, 8 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=060009B), [All aircraft, 9,308 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Aircraft](https://openairdocs.org/ntsb-findings/01050000): Aircraft › Aircraft power plant · Unintentional use/operation (probable cause); cases with it: [Evolution REVO, 1 case](https://openairdocs.org/ntsb-findings/01050000/cases.md?model=060009B), [All aircraft, 151 cases](https://openairdocs.org/ntsb-findings/01050000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Standing-engine(s) start-up: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Evolution REVO, 3 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=060009B), [All aircraft, 4,590 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Standing-engine(s) start-up: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Evolution REVO, 2 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=060009B), [All aircraft, 1,428 cases](https://openairdocs.org/ntsb-events/060/sequence.md) ## Analysis The flight instructor in the weight shift aircraft, which was equipped with a floor mounted, foot operated throttle, reported that upon startup, the pilot receiving instruction inadvertently applied full throttle while putting his right foot on the pedal power control unit. Subsequently, the weight shift aircraft started to move towards a parked jet, so the flight instructor turned the aircraft sharply and the aircraft tipped onto its side. The weight shift aircraft sustained substantial damage to both wings. The flight instructor reported that there were no pre impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. ## Factual narrative The flight instructor in the weight shift aircraft, which was equipped with a floor mounted, foot operated throttle, reported that upon startup, the pilot receiving instruction inadvertently applied full throttle while putting his right foot on the pedal power control unit. Subsequently, the weight shift aircraft started to move towards a parked jet, so the flight instructor turned the aircraft sharply and the aircraft tipped onto its side. The weight shift aircraft sustained substantial damage to both wings. The flight instructor reported that there were no pre impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. ## Aircraft - Registration: [N31PH](https://openairdocs.org/aircraft/N31PH), registered now, S/N 000611, built 2015 (OpenAirDocs) - Reported make and model: EVOLUTION AIRCRAFT INC REVO - Registry model: [Evolution REVO](https://openairdocs.org/model/evolution-revo) (registry code 060009B) (OpenAirDocs) - Registry engine: [Rotax 912 IS series](https://openairdocs.org/engine/rotax-912-is-series) (registry code 55593, 4 cycle) (OpenAirDocs) - Category: Weight-shift - Serial number: 000611 - Year built: 2015 - Airframe hours: 72 - Engines: Rotax 912iS 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Annual, July 20, 2016 - Departed: CXP, Carson City, NV - Destination: CXP, Carson City, NV - Airport: CXP, Carson - Equipment: Airframe parachute, ADS-B ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 60; injuries: none; sport pilot, private, flight instructor; airplane ratings: single-engine land; medical: sport pilot, without waivers/limitations; last flight review June 5, 2015; seat: rear; restraint: lap only; flight hours: 4,960 total, 470 in this make and model, 4,900 as pilot in command, 160 in the last 90 days, 40 in the last 30 days, 2 in the last 24 hours - Pilot; age 75; injuries: none; sport pilot; airplane ratings: single-engine land; medical: sport pilot, unknown; last flight review October 29, 2014; seat: front; restraint: 3-point; flight hours: 175 total, 1 in this make and model, 150 as pilot in command, 10 in the last 90 days, 5 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 36 °F, dew point 32 °F - Altimeter: 30.37 inHg - Observed at: KCXP, 1 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 20161020021819A](https://openairdocs.org/incident/20161020021819A), Oct 20, 2016: Evolution Aircraft REVO, Carson City, NV, Substantial damage. During a flight review check ride, the light sport, weight shift control aircraft went to full throttle on start up. The aircraft accelerated towards a nearby… ## Docket (2 files) The files NTSB released with the investigation on November 29, 2016, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=94270. 1.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 915 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459000&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photo (Courtesy of FAA) (item 2, .PDF, 1 photo, 471 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40446807&FileExtension=.PDF&FileName=Accident%20Photo%20(Courtesy%20of%20FAA)-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.