# NTSB WPR21LA367: Quest Kodiak 100, N456SB, Roche Harbor, WA, July 6, 2021

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: July 6, 2021, 15:40 local (22:40 UTC)
- Place: Roche Harbor, WA · Seaport
- Coordinates: 48.608155, -123.15963 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.6082&lon=-123.1596&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-landing roll: Dragged wing/rotor/float/other](https://openairdocs.org/ntsb-events/093)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Western Pacific Region
- Parties: FAA
- NTSB case key (mKey): 104856
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA367
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/104856/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=104856
- Page: https://openairdocs.org/ntsb/WPR21LA367

## Probable cause

The pilot’s failure to maintain bank control during the landing roll which resulted in the right wing impacting the water’s surface.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Performance/control parameters: lateral/bank control](https://openairdocs.org/ntsb-findings/01062023): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Quest KODIAK 100, 1 case](https://openairdocs.org/ntsb-findings/01062023/cases.md?model=7320001), [All aircraft, 390 cases](https://openairdocs.org/ntsb-findings/01062023/cases.md)
- [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Quest KODIAK 100, 4 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=7320001), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/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: Dragged wing/rotor/float/other](https://openairdocs.org/ntsb-events/093) (defining event); cases with it: [Quest KODIAK 100, 1 case](https://openairdocs.org/ntsb-events/093/sequence.md?model=7320001), [All aircraft, 319 cases](https://openairdocs.org/ntsb-events/093/sequence.md)

## Analysis

The pilot of the amphibious-equipped airplane reported that, during a water landing the left wing lifted, and the right wing struck the water’s surface. The right-wing aileron was substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N456SB](https://openairdocs.org/aircraft/N456SB), registered now, S/N 100-0196, built 2016 (OpenAirDocs)
- Reported make and model: QUEST AIRCRAFT COMPANY LLC KODIAK 100
- Registry model: [Quest KODIAK 100](https://openairdocs.org/model/quest-kodiak-100) (registry code 7320001) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-34 series](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-34-series) (registry code 52250, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 100-0196
- Year built: 2016
- Airframe hours: 206.2
- Engines: P & W PT6A-34 750 horsepower turbo prop
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Surfbird Aviation LLC
- Registered owner: Surfbird Aviation LLC
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 11, 2020
- Departed: KBFI, Seattle, WA
- Destination: W39, Friday Harbor, WA
- Airport: W39, Roche Harbor Seaplane Base
- Equipment: Electronic primary flight display, Stall warning system, ADS-B, Auto-pilot, Electronic multifunction display

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review June 24, 2021; seat: left; restraint: 3-point; flight hours: 5,140 total, 40 in this make and model, 3,517 as pilot in command, 63 in the last 90 days, 21 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 110° at 4 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 55 °F
- Altimeter: 29.98 inHg
- Observed at: KFHR, 7 nm away
- METAR: KFHR 062253Z AUTO 11004KT 10SM CLR 22/13 A2998 RMK AO2 SLP152 T02170133 TSNO=

## 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 20210706022989A](https://openairdocs.org/incident/20210706022989A), Jul 6, 2021: Quest Aircraft Company LLC KODIAK 100, Roche Harbor, WA, Substantial damage. On March 1, 2022, the seattle flight standards district office (seattle FSDO) delayed report: WPR21LA357. On July 6, 2021, [privacy data omitted]operated an…

## Docket (3 files)

The files NTSB released with the investigation on April 20, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=104856. 2.4 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13583680&FileExtension=pdf&FileName=Pilot%206120_Redacted-Rel.pdf
- Record of phone conversation (item 2, PDF, 1 page, 169 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13593937&FileExtension=pdf&FileName=Record%20of%20phone%20conversation%20(Pilot)-Rel.pdf
- Damage photos (item 3, PDF, 2 pages, 423 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13584139&FileExtension=pdf&FileName=Damage%20Photo-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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