# NTSB ERA22LA005: Cessna 210, N6318B, Columbia, SC, October 5, 2021

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: October 5, 2021, 14:15 local (18:15 UTC)
- Place: Columbia, SC
- Coordinates: 33.970245, -80.994929 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.9702&lon=-80.9949&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094)
- 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: Eastern Region Aviation
- Parties: FAA/FSDO
- NTSB case key (mKey): 104059
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA22LA005
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/104059/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=104059
- Page: https://openairdocs.org/ntsb/ERA22LA005

## Probable cause

A failure of the landing gear hydraulic power pack for reasons that could not be determined.

## Findings

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

- [Hydraulic power system: pump, main](https://openairdocs.org/ntsb-findings/01022913): Aircraft › Aircraft systems · Malfunction (probable cause); cases with it: [Cessna 210M, 1 case](https://openairdocs.org/ntsb-findings/01022913/cases.md?model=2073450), [All aircraft, 7 cases](https://openairdocs.org/ntsb-findings/01022913/cases.md)
- [Landing gear system: gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230): Aircraft › Aircraft systems · Malfunction (probable cause); cases with it: [Cessna 210M, 2 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md?model=2073450), [All aircraft, 416 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md)

## Sequence of events

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

- [Prior to flight: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330); cases with it: [Cessna 210M, 1 case](https://openairdocs.org/ntsb-events/330/sequence.md?model=2073450), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md)
- [Approach: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330); cases with it: [Cessna 210M, 1 case](https://openairdocs.org/ntsb-events/330/sequence.md?model=2073450), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md)
- [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Cessna 210M, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=2073450), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md)

## Analysis

The pilot reported that the gear unsafe light was intermittent while he taxied before departure. After a discussion with his mechanic, the pilot decided to fly the airplane home for repairs. During the return flight, the gear unsafe light again illuminated intermittently. The landing gear locked light illuminated when he lowered the airplane’s landing gear, although there were two transient and momentary “chirps” of the landing gear warning system. The pilot visually confirmed that the main landing gear were down; however, during the subsequent landing roll, the right landing gear collapsed. The airplane tipped to the right, which resulted in damage to the right elevator and horizontal stabilizer. A follow-up examination of the landing gear hydraulic power pack revealed that the hydraulic pump operated intermittently.

## Aircraft

- Registration: [N6318B](https://openairdocs.org/aircraft/N6318B), registered now, S/N 21062745, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA 210 (M)
- Registry model: [Cessna 210M](https://openairdocs.org/model/cessna-210m) (registry code 2073450) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21062745
- Year built: 1978
- Airframe hours: 4768
- Engines: Continental IO 520L46B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Centurion Associates 2 LLC
- Registered owner: Centurion Associates 2 LLC
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 15, 2021, 12 hours before
- Departed: MYR, Myrtle Beach, SC
- Destination: Same as departure
- Flight plan: IFR
- Airport: CUB, Jim Hamilton L B Owens, runway 13, 5,011 × 75 ft, asphalt
- Equipment: Onboard weather, ADS-B, Auto-pilot, Electronic multifunction display, Electronic primary flight display

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; injuries: none; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review February 20, 2020; seat: left; restraint: 3-point; flight hours: 2,976 total, 674 in this make and model, 2,803 as pilot in command, 8 in the last 90 days, 8 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Temperature: 84 °F, dew point 63 °F
- Altimeter: 30.08 inHg
- Icing: Unknown
- Turbulence: Unknown
- Observed at: CUB
- METAR: METAR KCUB 051753Z AUTO VRB04KT 10SM SCT110 29/17 A3008 RMK AO2 LTG DSNT SE AND S SLP184 T02890167 10300 20200 58015=

## 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 20211005022949A](https://openairdocs.org/incident/20211005022949A), Oct 5, 2021: Cessna 210M, Columbia, SC, Minor damage. Pilot experienced intermittent red light after the gear had locked down. Conversation with his mechanic they believed it to be an intermittent switch. On touch…

## Docket (5 files)

The files NTSB released with the investigation on May 6, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=104059. 4.4 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12874862&FileExtension=pdf&FileName=6120%20Signed_Redacted-Rel.pdf
- Pilot statement (item 2, PDF, 2 pages, 586 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12875338&FileExtension=pdf&FileName=Record%20of%20Conversation%20Pilot%20Reviewed-Rel.pdf
- FAA inspector statement (item 3, PDF, 1 page, 578 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12874680&FileExtension=pdf&FileName=Record%20of%20Conversation%20FAA%20Inspector_Redacted-Rel.pdf
- Mechanic statement (item 4, PDF, 1 page, 576 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12874351&FileExtension=pdf&FileName=Record%20of%20Conversation%20Mechanic_Redacted-Rel.pdf
- Photo array (item 5, PDF, 3 pages, 424 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12874361&FileExtension=pdf&FileName=Photo%20Array-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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