# NTSB CEN12LA420: Cessna T210M, N311TM, Colorado Springs, CO, July 20, 2012

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 19, 2012, 19:00 local (Jul 20, 2012, 01:00 UTC)
- Place: Colorado Springs, CO
- Coordinates: 38.801447, -104.70345 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.8014&lon=-104.7035&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Defining event: [Approach: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 12, 2013
- Report: Approved by Office Director
- NTSB office: Central Region
- Parties: FAA Flight Standards District Office
- NTSB case key (mKey): 84194
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN12LA420
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/84194/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=84194
- Page: https://openairdocs.org/ntsb/CEN12LA420

## Probable cause

The failure of the right hydraulic main gear down-lock actuator hose in flight.

## Findings

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

- [Hydraulic power system: hydraulic, main system](https://openairdocs.org/ntsb-findings/01022910): Aircraft › Aircraft systems · Failure (probable cause); cases with it: [Cessna T210M, 1 case](https://openairdocs.org/ntsb-findings/01022910/cases.md?model=2073451), [All aircraft, 27 cases](https://openairdocs.org/ntsb-findings/01022910/cases.md)

## Sequence of events

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

- [Approach: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) (defining event); cases with it: [Cessna T210M, 6 cases](https://openairdocs.org/ntsb-events/330/sequence.md?model=2073451), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md)
- [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Cessna T210M, 7 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=2073451), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md)

## Analysis

The pilot said that he lowered the landing gear in preparation for landing but did not see a “GEAR SAFE” green light. He visually confirmed that the right main landing gear had not extended fully and noted red fluid on the landing gear. The pilot landed on the left main landing gear and, as the airplane slowed, it settled on the right wing tip and came to a halt. A repair facility retrieved the airplane and reported that the right hydraulic main gear down-lock actuator hose had failed. The hose appeared to have been an original installation. Other hydraulic lines had been replaced as there were three different styles of hoses noted.

## Factual narrative

On July 19, 20121, about 1900 mountain daylight time, the right main landing gear of a Cessna T210M, N311TM, failed to extend prior to landing at the City of Colorado Springs Municipal Airport (KCOS), Colorado Springs, Colorado. The pilot and passenger were not injured. The airplane was substantially damaged. The airplane was registered to and operated by Aerworthy Consulting, LLC, of Franktown, Colorado, under the provisions of 14 Code of Federal Regulations (CFR) Part 91 as a personal flight. Visual meteorological conditions (VMC) prevailed at the time of the accident, and an instrument flight rules (IFR) flight plan had been filed and activated. The cross-country flight originated from Liberal (KLBL), Kansas, at 1621. After the accident, the pilot reported to the NTSB that he lowered the landing gear in preparation for landing but did not get a GEAR SAFE green light. He visually confirmed that the right main landing gear had not extended fully. Red fluid was also noted on the landing gear. When the pilot made a low pass, control tower personnel confirmed the landing gear was not fully extended. The pilot then attempted to extend the gear manually but to no avail. After burning off most of the fuel in the right tank, the pilot landed on the left main landing gear. As the airplane slowed, it settled on the right wing tip and came to a halt. Post-accident examination revealed the right elevator and horizontal stabilizer spar were broken. In a telephone conversation, the pilot said the last annual inspection of the airplane was performed on February 2, 2012, at a total time of 3,146 hours. At that time several, but not all, hydraulic lines were replaced. Beegles Aircraft Service retrieved the airplane and transported it to their facility in Greeley, Colorado, for repair. They reported finding the right hand hydraulic main gear down lock actuator hose had failed. The hose appeared to have been an original installation. Other hydraulic lines had been replaced as there were three different styles of hoses noted.

## Aircraft

- Registration: [N311TM](https://openairdocs.org/deregistered/N311TM-2020-01-06), registration cancelled 2020-01-06, S/N 21062515, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA T210M
- Registry model: [Cessna T210M](https://openairdocs.org/model/cessna-t210m) (registry code 2073452) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21062515
- Airframe hours: 3146
- Engines: Continental TSIO-520R 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Aerworthy Consulting LLC
- Registered owner: Aerworthy Consulting LLC
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, February 2, 2012, 24 hours before
- Departed: KLBL, Liberal, KS
- Destination: KCOS, Colorado Springs, CO
- Flight plan: IFR
- Airport: KCOS, Colorado Springs Municipal, runway 13, 8,269 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 52; injuries: none; commercial, private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review February 15, 2011; seat: left; flight hours: 1,563 total, 849 in this make and model, 1,456 as pilot in command, 25 in the last 90 days, 5 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 34 °F
- Altimeter: 30.25 inHg
- Observed at: KCOS

## 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 20120719015449A](https://openairdocs.org/incident/20120719015449A), Jul 19, 2012: Cessna T210M, Colorado Spring, CO, Substantial damage. On 7/19/2012, approx. 1915MDT, Cessna T210, N311TM, landed gear up at cos. Aircraft sustained substantial damage, 2 POB, no injuries.

## Docket (8 files)

The files NTSB released with the investigation on September 6, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=84194. 9.8 MB in all.

- NTSB Form 6120.1-2, Pilot-Operator Aircraft Accident Report (item 1, .PDF, 986 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40373849&FileExtension=.PDF&FileName=NTSB%20Form%206120.1-2,%20Pilot-Operator%20Aircraft%20Accident%20Report-Redacted.PDF
- Record of Telephone Conversation (item 2, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40376046&FileExtension=.PDF&FileName=Record%20of%20Telephone%20Conversation-Master.PDF
- E-Mail from Beegles Aircraft Service (item 3, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40376031&FileExtension=.PDF&FileName=E-Mail%20from%20Beegles%20Aircraft%20Service-Master.PDF
- Photos from Beegles Aircraft Service (item 4, .PDF, 397 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40376033&FileExtension=.PDF&FileName=Photos%20from%20Beegles%20Aircraft%20Service-Master.PDF
- Weather Reports and Records (item 5, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40376037&FileExtension=.PDF&FileName=Weather%20Reports%20and%20Records-Master.PDF
- Photo 1 - N311TM off the left side of runway 13. (item 6, .PDF, 2.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40373862&FileExtension=.PDF&FileName=Photo%201%20-%20N311TM%20off%20the%20left%20side%20of%20runway%2013.-Master.PDF
- Photo 2 - Damaged right horizontal stabilizer and right wing tip. (item 7, .PDF, 3.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40373867&FileExtension=.PDF&FileName=Photo%202%20-%20Damaged%20right%20horizontal%20stabilizer%20and%20right%20wing%20tip.-Master.PDF
- Photo 3 - Right rear view. Note bent right horizontal stabilizer. (item 8, .PDF, 2.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40373873&FileExtension=.PDF&FileName=Photo%203%20-%20%20Right%20rear%20view.%20Note%20bent%20right%20horizontal%20stabilizer.-Master.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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