Quest Aircraft Company LLC KODIAK 100 accident near Roche Harbor, Washington, July 6, 2021
On July 6, 2021 at about 10:40 pm local time, a 2016 Quest Aircraft Company LLC KODIAK 100, registered N456SB, was substantially damaged in an accident during landing (landing roll) near Roche Harbor, Washington (Roche Harbor Seaplane Base airport). It was a business flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot’s failure to maintain bank control during the landing roll which resulted in the right wing impacting the water’s surface.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 6, 2021 · about 10:40 pm local time
- Place
- Roche Harbor, Washington · Roche Harbor Seaplane Base · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Quest Aircraft Company LLC KODIAK 100, built 2016 · all KODIAK 100s on the register
- Registration
- N456SB · registry record · serial 100-0196
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
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.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Dragged wing/rotor/float/other during landing (landing roll) defining event
The NTSB's findings
- Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Lateral/bank control › Not attained/maintained
- Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
Pilot
- Certificate: airline transport pilot
- Ratings: multi-engine land; single-engine land; single-engine sea; instrument: airplane
- Flight time: 5,140 hours in all; 40 in this make and model; 63 in the last 90 days; 21 in the last 30 days; 3,517 as pilot in command
- Last flight review: June 24, 2021
- Medical certificate: Class 1 (without waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 206.2 hours
- Last inspection: annual inspection, December 11, 2020
- Maximum gross weight: 7,255 lb
- Seats: 7
- Landing gear: retractable
- Engine: P & W PT6A-34 (turboprop); 306 hours total
- Operator: Surfbird Aviation LLC
The flight
- Departed from: KBFI Seattle WA at 9:55 pm
- Destination: W39 Friday Harbor WA
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: from 110° at 4 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 72°F (22°C), dew point 55°F (13°C)
- Altimeter: 29.98 inHg
- Observation at 3:53 pm from KFHR, 7 miles away
Weather report (METAR): KFHR 062253Z AUTO 11004KT 10SM CLR 22/13 A2998 RMK AO2 SLP152 T02170133 TSNO=
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number WPR21LA367.