# NTSB CEN09CA045: Hartter Lenny J Bearhawk, N3119X, Mack, CO, November 1, 2008

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: November 1, 2008, 16:35 local (23:35 UTC)
- Place: Mack, CO
- Coordinates: 39.267501, -108.858612 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.2675&lon=-108.8586&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 May 12, 2009
- Report: Approved by Office Director
- NTSB office: Central Region
- Parties: FAA Salt Lake City FSDO
- NTSB case key (mKey): 69384
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN09CA045
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69384/pdf
- Page: https://openairdocs.org/ntsb/CEN09CA045

## Probable cause

The collapse of the left main landing gear which resulted in the pilot's failure to maintain directional control.

## Findings

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

- [Landing gear system: main landing gear](https://openairdocs.org/ntsb-findings/01023210): Aircraft › Aircraft systems · Capability exceeded (probable cause); cases with it: [Hartter Lenny J BEARHAWK, 1 case](https://openairdocs.org/ntsb-findings/01023210/cases.md?model=05622Q7), [All aircraft, 241 cases](https://openairdocs.org/ntsb-findings/01023210/cases.md)
- [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Hartter Lenny J BEARHAWK, 1 case](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=05622Q7), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md)
- [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Hartter Lenny J BEARHAWK, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05622Q7), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md)

## Sequence of events

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

- [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Hartter Lenny J BEARHAWK, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=05622Q7), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md)

## Analysis

The private pilot was landing when he used right rudder to correct for drift and inadvertently applied uneven right braking. The left main gear on the experimental amateur built airplane then collapsed causing the left wing and the propeller to strike the runway. There was substantial damage to the left wing, but no injuries to the solo pilot.

## Factual narrative

The private pilot was landing the homebuilt airplane when he used right rudder to correct for drift, and he inadvertently applied uneven right braking. Shortly thereafter, the left main gear then collapsed causing the left wing and the propeller to strike the runway. There was substantial damage to the left wing, but no injuries to the solo pilot.

## Aircraft

- Registration: [N3119X](https://openairdocs.org/aircraft/N3119X), registered now, S/N 001, built 2007 (OpenAirDocs)
- Reported make and model: HARTTER LENNY J BEARHAWK
- Registry model: [Hartter Lenny J BEARHAWK](https://openairdocs.org/model/hartter-lenny-j-bearhawk) (registry code 05622Q7) (OpenAirDocs)
- Registry engine: [Lycoming O-540-E4B5](https://openairdocs.org/engine/lycoming-o-540-e4b5) (registry code 42342, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1
- Airframe hours: 59
- Engines: Lycoming O-540-E4B5 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, August 9, 2008, 26 hours before
- Departed: C07, Mack, CO
- Destination: C07, Mack, CO
- Flight plan: Unknown
- Airport: C07, Mack Mesa Airport, runway 25, 2,600 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review May 19, 2008; seat: left; flight hours: 119 total, 34 in this make and model, 21 as pilot in command, 34 in the last 90 days, 14 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 7 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 86 °F, dew point 23 °F
- Altimeter: 30.14 inHg
- Observed at: KGJT, 18 nm away

## 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 20081101849749A](https://openairdocs.org/incident/20081101849749A), Nov 1, 2008: Hartte BEARHAWK, Mack, CO, Substantial damage. (-23) During landing on r/w 25 at Mack Mesa Airport, the pilot loss directional control of the aircraft on touch down and departed the runway to the right…

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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