# NTSB ANC22LA006: Cub Crafters CC-18-180, N413CC, Yukon Charlie River, AK, November 9, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: November 8, 2021, 15:15 local (Nov 9, 2021, 00:15 UTC) - Place: Yukon Charlie River, AK · L20 - Coordinates: 65.300192, -143.13334 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=65.3002&lon=-143.1333&mi=10 - Phase of flight: [Other](https://openairdocs.org/ntsb-phases/800) (OpenAirDocs' grouping) - Defining event: [Other: 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 - NTSB case key (mKey): 104234 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC22LA006 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/104234/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=104234 - Page: https://openairdocs.org/ntsb/ANC22LA006 ## Probable cause The pilot’s selection of an unsuitable landing site, which resulted in a nose-over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cub Crafters CC18-180, 3 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2470003), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Runway/land/takeoff/taxi surface: snow/slush/ice covered surface](https://openairdocs.org/ntsb-findings/03023015): Environmental issues › Physical environment · Decision related to condition; cases with it: [Cub Crafters CC18-180, 1 case](https://openairdocs.org/ntsb-findings/03023015/cases.md?model=2470003), [All aircraft, 219 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Approach-VFR go-around: Dragged wing/rotor/float/other](https://openairdocs.org/ntsb-events/093); cases with it: [Cub Crafters CC18-180, 2 cases](https://openairdocs.org/ntsb-events/093/sequence.md?model=2470003), [All aircraft, 319 cases](https://openairdocs.org/ntsb-events/093/sequence.md) - [Approach-VFR go-around: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Cub Crafters CC18-180, 3 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=2470003), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Approach-VFR go-around: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Cub Crafters CC18-180, 7 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=2470003), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Other: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Cub Crafters CC18-180, 6 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=2470003), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that he had completed one high to mid-level reconnaissance flight over the snow-covered runway in his tundra tire tailwheel-equipped airplane. Before landing, he intended to fly a low pass and drag the main landing gear along the surface of the runway to determine the depth of the snow. As the main landing gear wheels touched down atop the snow, he stated it initially felt okay but also felt deeper than what he had anticipated. He applied full power and began to apply back stick pressure, but he felt the snow consistency change to a punchy feeling, and the airplane’s tail began to rise. Subsequently, the airplane nosed over and sustained substantial damage to the rudder and right-wing lift strut. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N413CC](https://openairdocs.org/aircraft/N413CC), registered now, S/N CC18-0065, built 2013 (OpenAirDocs) - Reported make and model: CUB CRAFTERS CC-18-180 - Registry model: [Cub Crafters CC18-180](https://openairdocs.org/model/cub-crafters-cc18-180) (registry code 2470003) (OpenAirDocs) - Registry engine: [Lycoming O-360-C4P](https://openairdocs.org/engine/lycoming-o-360-c4p) (registry code 42289, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: CC18-0065 - Year built: 2013 - Airframe hours: 1388.8 - Engines: LYCOMING O-360-C4P 180 horsepower reciprocating - Damage: Substantial damage - Flight: Public aircraft, Part 91 - Operator: US Dept Of The Interior - Registered owner: US Dept Of The Interior - Airworthiness certificate: Special, Restricted (Special); Standard, Normal - Last inspection: Annual, September 27, 2021 - Departed: PAEG, Eagle, AK - Destination: Same as departure - Flight plan: Company VFR - Airport: L20, Coal Creek, runway 01, 3,900 × 80 ft, snow - Equipment: ADS-B, Electronic flight bag or handheld device, Satellite tracking device, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 37; injuries: none; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review October 29, 2021; seat: front; restraint: 5-point; flight hours: 2,274 total, 975 in this make and model, 2,105 as pilot in command, 160 in the last 90 days, 42 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 6,000 ft overcast - Temperature: 5 °F, dew point -0 °F - Altimeter: 29.93 inHg - Observed at: PAEG, 59 nm away - METAR: PAEG 090053Z AUTO 00000KT 10SM OVC060 M15/M18 A2993 RMK AO2 SLP161 T11501178 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 20211108019029A](https://openairdocs.org/incident/20211108019029A), Nov 8, 2021: Cub Crafters Inc CC18-180, Circle City, AK, Substantial damage. After visual determination of runway conditions using known area obstacles and determining on site weather, pilot set up for landing. Note: pilot was not… ## Other investigations on N413CC (1) 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. - [NTSB GAA18CA541](https://openairdocs.org/ntsb/GAA18CA541), Sep 6, 2018: Cub Crafters CC18 (N413CC), Northway, AK, substantial damage. Probable cause: The airplane’s collision with a bird during straight-and-level flight. ## Docket (2 files) The files NTSB released with the investigation on March 21, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=104234. 4.1 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 12 pages, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13114105&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf - Accident pictures (item 2, PDF, 3 pages, 173 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13113940&FileExtension=pdf&FileName=Accident%20Pictures-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.