# NTSB ANC23LA067: Cessna U206F, N1733R, Chinitna Bay, AK, August 28, 2023 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: August 28, 2023, 12:05 local (20:05 UTC) - Place: Chinitna Bay, AK · beach - Coordinates: 59.866972, -153.11274 - Nearby events: https://openairdocs.org/map.md?lat=59.8670&lon=-153.1127&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 6 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Alaska Regional Office - Parties: FAA/FSDO - NTSB case key (mKey): 192982 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC23LA067 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/192982/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=192982 - Page: https://openairdocs.org/ntsb/ANC23LA067 ## Probable cause The pilot’s failure to maintain directional control on takeoff. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna U206F, 3 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2073333), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna U206F, 9 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2073333), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Runway/land/takeoff/taxi surface: wet surface](https://openairdocs.org/ntsb-findings/03023010): Environmental issues › Physical environment · Effect on operation; cases with it: [Cessna U206F, 1 case](https://openairdocs.org/ntsb-findings/03023010/cases.md?model=2073333), [All aircraft, 141 cases](https://openairdocs.org/ntsb-findings/03023010/cases.md) - [Runway/land/takeoff/taxi surface: soft surface](https://openairdocs.org/ntsb-findings/03023020): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Cessna U206F, 2 cases](https://openairdocs.org/ntsb-findings/03023020/cases.md?model=2073333), [All aircraft, 264 cases](https://openairdocs.org/ntsb-findings/03023020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Cessna U206F, 7 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2073333), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The pilot reported that during takeoff from a remote beach site, soft sand pulled the airplane to the left, so she aborted the takeoff and repositioned for a second attempt. During the second takeoff attempt, just prior to rotation, the airplane’s right wheel contacted the water, which pivoted the airplane to the right, and it nosed down into the shallow water. The right wing sustained substantial damage. The pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N1733R](https://openairdocs.org/aircraft/N1733R), registered now, S/N U20602068, built 1973 (OpenAirDocs) - Reported make and model: CESSNA U206F - Registry model: [Cessna U206F](https://openairdocs.org/model/cessna-u206f) (registry code 2073333) (OpenAirDocs) - Registry engine: [Continental IO-520-F](https://openairdocs.org/engine/continental-io-520-f) (registry code 17237, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: U20602068 - Year built: 1973 - Airframe hours: 8862 - Engines: Continental IO-520DCF 300 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 135 - Operator: Alaska Skyways Inc, doing business as Regal Air - Registered owner: Northstar Holdings LLC - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, August 8, 2023, 78 hours before - Destination: PALH, Anchorage, AK - Flight plan: Company VFR - Airport: runway N/A, 5,000 × 35 ft, dirt - Equipment: ADS-B, Handheld GPS, Satellite tracking device, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 37; injuries: none; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review May 17, 2023; seat: left; restraint: 3-point; flight hours: 1,351 total, 310 in this make and model, 1,277 as pilot in command, 220 in the last 90 days, 100 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 220° at 4 knots - Visibility: 7 statute miles - Lowest ceiling: 4,100 ft overcast - Temperature: 54 °F, dew point 50 °F - Altimeter: 29.86 inHg - Observed at: PAHO, 51 nm away - METAR: PAHO 281953Z 22004KT 7SM -RA FEW006 FEW012 OVC041 12/10 A2986 RMK AO2 SLP113 P0003 T01170100 ## 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 20230828009859A](https://openairdocs.org/incident/20230828009859A), Aug 28, 2023: Cessna U206F, Chinitna Bay, AK, Substantial damage. On aug 28th, at approximately 12:00PM AKST, the pilot was taking off to the east from the long beach in Chinitna Bay in a wheeled-equipped Cessna U206F. On the… ## Docket (2 files) The files NTSB released with the investigation on April 4, 2024, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=192982. 8.7 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 7.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16236814&FileExtension=pdf&FileName=NTSB%206120_Redacted-Rel.pdf - Photos (item 2, PDF, 4 pages, 981 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16820816&FileExtension=pdf&FileName=ANC23LA067%20Photos-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. --- 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.