# NTSB WPR21LA028: Cessna T210K, N8251M, Los Alamos, NM, October 24, 2020

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: October 23, 2020, 20:10 local (Oct 24, 2020, 02:10 UTC)
- Place: Los Alamos, NM · Airport environment, landed gear up on runway.
- Coordinates: 35.879686, -106.26868
- Nearby events: https://openairdocs.org/map.md?lat=35.8797&lon=-106.2687&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-flare/touchdown: Landing gear not configured](https://openairdocs.org/ntsb-events/095)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 102201
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA028
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102201/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102201
- Page: https://openairdocs.org/ntsb/WPR21LA028

## Probable cause

The pilot’s failure to extend the landing gear, which resulted in the airplane landing with the landing gear retracted.

## Findings

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

- [Landing gear system: gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230): Aircraft › Aircraft systems · Not used/operated (probable cause); cases with it: [Cessna T210K, 1 case](https://openairdocs.org/ntsb-findings/01023230/cases.md?model=2073447), [All aircraft, 416 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md)
- [Action: forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna T210K, 1 case](https://openairdocs.org/ntsb-findings/02041035/cases.md?model=2073447), [All aircraft, 440 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md)

## Sequence of events

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

- [Landing-flare/touchdown: Landing gear not configured](https://openairdocs.org/ntsb-events/095) (defining event); cases with it: [Cessna T210K, 2 cases](https://openairdocs.org/ntsb-events/095/sequence.md?model=2073447), [All aircraft, 584 cases](https://openairdocs.org/ntsb-events/095/sequence.md)

## Analysis

The pilot reported that while working on night currency and flying from the right seat, he did not verify the landing gear was extended before landing. The airplane landed with the landing gear retracted and slid about 1,200 ft down the runway before it came to a stop. The pilot reported that there were no mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N8251M](https://openairdocs.org/deregistered/N8251M-2021-07-30), registration cancelled 2021-07-30, S/N 21059251, built 1969 (OpenAirDocs)
- Reported make and model: CESSNA T210K
- Registry model: [Cessna T210K](https://openairdocs.org/model/cessna-t210k) (registry code 2073447) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21059251
- Year built: 1969
- Airframe hours: 7165.08
- Engines: Continental TSIO-520H1B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Traveler Holdings LLC
- Registered owner: Traveler Holdings LLC
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, February 21, 2020
- Destination: Same as departure
- Airport: KLAM, Los Alamos Airport, runway 27, 6,000 × 120 ft, asphalt
- Equipment: Electronic flight bag or handheld device, Auto-pilot, ADS-B, Stall warning system

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; injuries: none; private; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review July 5, 2019; seat: right; restraint: 3-point; flight hours: 4,738 total, 3,253 in this make and model
- Pilot-rated passenger; age 62; injuries: none; flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: basicmed, without waivers/limitations; last flight review May 16, 2020; seat: left; restraint: 3-point; flight hours: 2,933 total, 143 in this make and model

## Weather

- Conditions: Visual (VMC), Night
- Wind: 190° at 11 knots, gusting 15
- Visibility: 14 statute miles
- Lowest ceiling: none
- Temperature: 32 °F, dew point 32 °F
- Altimeter: 30.23 inHg
- Observed at: KLAM

## 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 20201023017079A](https://openairdocs.org/incident/20201023017079A), Oct 23, 2020: Cessna T210K, Los Alamos, NM, Substantial damage. On October 23, 2020, at 2024 MDT, a Cessna 210K, N8251M, [privacy data omitted], Of santa fe, NM, landed gear up at Los Alamos airport (klam) on runway 27 in…

## Other investigations on N8251M (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 DEN08LA021](https://openairdocs.org/ntsb/DEN08LA021), Oct 28, 2007: Cessna T210K (N8251M), Los Alamos, NM, substantial damage. Probable cause: The binding of the nose landing gear doors for undetermined reasons, resulting in the pilot having to make a nose gear up landing.

## Docket (2 files)

The files NTSB released with the investigation on August 3, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102201. 8.4 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 13 pages, 8.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11585271&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf
- Photos - view of damage (item 2, PDF, 1 page, 113 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11584903&FileExtension=pdf&FileName=Photo-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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