# NTSB ANC24LA006: Charles J Kase Kase KUB, N853AK, Big Lake, AK, November 18, 2023

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: November 18, 2023, 12:00 local (21:00 UTC)
- Place: Big Lake, AK
- Coordinates: 61.534683, -149.81254 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.5347&lon=-149.8125&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096)
- 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: Alaska Regional Office
- Parties: FAA FSDO
- NTSB case key (mKey): 193485
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC24LA006
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/193485/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=193485
- Page: https://openairdocs.org/ntsb/ANC24LA006

## Probable cause

The pilot’s selection of an unsuitable landing site that was covered in deep snow.

## Findings

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

- [Info processing/decision: identification/recognition](https://openairdocs.org/ntsb-findings/02041510): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Charles J Kase KASE KUB, 1 case](https://openairdocs.org/ntsb-findings/02041510/cases.md?model=05636SB), [All aircraft, 559 cases](https://openairdocs.org/ntsb-findings/02041510/cases.md)
- [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Charles J Kase KASE KUB, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=05636SB), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md)
- [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Charles J Kase KASE KUB, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05636SB), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md)
- [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained; cases with it: [Charles J Kase KASE KUB, 1 case](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=05636SB), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Charles J Kase KASE KUB, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05636SB), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md)

## Analysis

The pilot reported that she landed on a runway that was covered in deep snow which resulted in a nose over and substantial damage to the rudder and fuselage. The pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N853AK](https://openairdocs.org/aircraft/N853AK), registered now, S/N 6901, built 2017 (OpenAirDocs)
- Reported make and model: CHARLES J KASE KASE KUB
- Registry model: [Charles J Kase KASE KUB](https://openairdocs.org/model/charles-j-kase-kase-kub) (registry code 05636SB) (OpenAirDocs)
- Registry engine: [Lycoming O-320 series](https://openairdocs.org/engine/lycoming-o-320-series) (registry code 42389, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 6901
- Year built: 2017
- Airframe hours: 94
- Engines: Lycoming O320A3B reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Condition, November 3, 2023
- Departed: PAWS, Wasilla, AK
- Destination: Same as departure
- Airport: PAGQ, Big Lake, runway 07, 2,450 × 70 ft, snow

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 70; injuries: none; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, with waivers/limitations; last flight review July 20, 2021; seat: front; restraint: 4-point; flight hours: 461 total, 49 in this make and model, 382 as pilot in command, 20 in the last 90 days, 2 in the last 30 days, 0 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none
- Temperature: 10 °F, dew point 5 °F
- Altimeter: 29.90 inHg
- Observed at: AWS, 8 nm away
- METAR: PAWS 182056Z AUTO 00000KT CLR M12/M15 A2990 RMK AO2 SLP134 T11171150 51017 PWINO FZRANO RVRNO $

## 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 20231118017959A](https://openairdocs.org/incident/20231118017959A), Nov 18, 2023: Charles J Kase KASE KUB, Big Lake, AK, Substantial damage. On November 18, 2023, the pilot of an experimental PA-18 type home-built Kase Kub took off from wolf lake strip (4AK6) after a condition inspection. The…

## Docket (2 files)

The files NTSB released with the investigation on August 30, 2024, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=193485. 2.3 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16442577&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf
- Photos (item 2, PDF, 3 pages, 211 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16441354&FileExtension=pdf&FileName=ANC24LA006%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.

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