# NTSB DEN84LA190: Cessna 180, N153M, Gallup, NM, June 21, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 21, 1984, 09:02 local (15:02 UTC)
- Place: Gallup, NM
- Coordinates: 35.520401, -108.730117 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.5204&lon=-108.7301&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16409
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84LA190
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16409/pdf
- Page: https://openairdocs.org/ntsb/DEN84LA190

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Main gear collapsed, landing - roll
  - landing gear,main gear - previous damage (cause)
  - landing gear,main gear - stripped thread (cause)
  - landing gear,main gear - failure,partial (cause)

## Analysis

DURING THE LANDING ROLL, THE RIGHT GEAR COLLAPSED & THE ACFT VEERED OFF THE RWY. AN EXAM REVEALED THAT THE RIGHT WHEEL ASS'Y HAD SEPARATED FROM THE GEAR LEG. THERE WAS EVIDENCE THAT THE 2 LOWER BOLTS HAD BEEN STRIPPED PRIOR TO THE WHEEL FAILURE, EITHER BY BEING OVERTORQUED OR BY A SERIES OF HARD LANDINGS. THE PRIOR OWNER HAD USED THE ACFT IN A SPORT PARACHUTE OPERATION.

## Aircraft

- Registration: [N153M](https://openairdocs.org/deregistered/N153M-2009-10-29), registration cancelled 2009-10-29, S/N 32314, built 1955 (OpenAirDocs)
- Reported make and model: CESSNA 180
- Registry model: [Cessna 180](https://openairdocs.org/model/cessna-180) (registry code 2072602) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 32314
- Engines: CONTINENTAL O-470-A 225 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Konroe Stahl
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, May 15, 1984, 40 hours before
- Departed: GRAND CANYON, AZ
- Airport: GUP, Senator Clarke, runway 24, 6,300 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 12,643 total, 65 in this make and model, 6,551 as pilot in command, 306 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 7 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 63 °F

## 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 19840621025979A](https://openairdocs.org/incident/19840621025979A), Jun 21, 1984: Cessna 180, Gallup, NM, Substantial damage. Main gear wheel attach bolts failed causing right wheel to collapse during landing roll.

## Other investigations on N153M (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 DEN06LA094](https://openairdocs.org/ntsb/DEN06LA094), Jun 30, 2006: Cessna 180 (N153M), Sheridan, WY, substantial damage. Probable cause: the partial loss of engine power for undetermined reasons. Contributing factors were the dirt embankment and fence.

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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