# NTSB WPR23LA277: Evolution Revolt, N277GH, Casper, WY, July 17, 2023

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Class 4 · Limited · Final report
- Date: July 17, 2023, 07:20 local (13:20 UTC)
- Place: Casper, WY
- Coordinates: 42.905861, -106.46363
- Nearby events: https://openairdocs.org/map.md?lat=42.9059&lon=-106.4636&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-flare/touchdown: Aircraft wake turb encounter](https://openairdocs.org/ntsb-events/361)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Western Pacific Region
- Parties: FAA FSFO
- NTSB case key (mKey): 192666
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR23LA277
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/192666/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=192666
- Page: https://openairdocs.org/ntsb/WPR23LA277

## Probable cause

The pilot’s loss of directional control during landing after encountering wake turbulence.

## 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: [Evolution REVOLT, 4 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=06001BM), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md)
- [Performance/control parameters: landing flare](https://openairdocs.org/ntsb-findings/01062041): Aircraft › Aircraft oper/perf/capability · Capability exceeded (probable cause); cases with it: [Evolution REVOLT, 1 case](https://openairdocs.org/ntsb-findings/01062041/cases.md?model=06001BM), [All aircraft, 1,285 cases](https://openairdocs.org/ntsb-findings/01062041/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: Aircraft wake turb encounter](https://openairdocs.org/ntsb-events/361) (defining event); cases with it: [Evolution REVOLT, 1 case](https://openairdocs.org/ntsb-events/361/sequence.md?model=06001BM), [All aircraft, 37 cases](https://openairdocs.org/ntsb-events/361/sequence.md)

## Analysis

The pilot reported being cleared to land by air traffic control and reported being cautioned of wake turbulence by an airplane that landed ahead in sequence. The pilot aimed to touchdown at a point beyond the presence of the wake turbulence. The airplane encountered light turbulence prior to landing and contacted the runway misaligned with the runway centerline. The pilot applied opposite input correction which produced a roll force resulting in the right wing contacting the ground, substantially damaging the airplane. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N277GH](https://openairdocs.org/aircraft/N277GH), registered now, S/N 001022 (OpenAirDocs)
- Reported make and model: EVOLUTION AIRCRAFT INC REVOLT
- Registry model: [Evolution REVOLT](https://openairdocs.org/model/evolution-revolt) (registry code 06001BM) (OpenAirDocs)
- Category: Weight-shift
- Serial number: 001022
- Airframe hours: 74.7
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Kc Construction
- Registered owner: Kc Construction
- Airworthiness certificate: Standard, Normal
- Departed: Casper, WY
- Destination: CPR, Casper, WY
- Airport: KCPR, Casper/Natrona County Airport, runway 03, 10,165 × 150 ft, asphalt
- Equipment: Electronic primary flight display, ADS-B, Airframe parachute

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; injuries: minor; private; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review November 8, 2021; seat: front; flight hours: 2,000 total, 25 in this make and model, 40 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 66 °F, dew point 48 °F
- Altimeter: 30.14 inHg
- Observed at: KCPR, 1 nm away
- METAR: KCPR 171353Z 00000KT 10SM CLR 19/09 A3014 RMK AO2 SLP135 T01890089

## 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 20230717010209A](https://openairdocs.org/incident/20230717010209A), Jul 17, 2023: Evolution Aircraft Inc REVOLT, Casper, WY, Minor damage. Pilot landed and rolled into turbulence from a palatis that had just landed.

## Docket (2 files)

The files NTSB released with the investigation on January 4, 2024, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=192666. 2.4 MB in all.

- Photos (item 1, PDF, 2 pages, 456 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16455758&FileExtension=pdf&FileName=Accident%20Photograph-Rel.pdf
- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 2, PDF, 11 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16457285&FileExtension=pdf&FileName=N277GH%206120_Redacted-Rel.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.

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