# NTSB FTW93LA036: Cessna 210B, N9637X, Mountain View, AR, November 8, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 8, 1992, 13:00 local (19:00 UTC)
- Place: Mountain View, AR
- Coordinates: 35.870174, -92.109649 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.8702&lon=-92.1096&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 14, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18615
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW93LA036
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18615/pdf
- Page: https://openairdocs.org/ntsb/FTW93LA036

## Probable cause

THE COLLAPSED RIGHT MAIN GEAR DUE TO THE GEAR LOCKING MECHANISM NOT BEING ENGAGED. A FACTOR WAS THE FAILED CRANKSHAFT.

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise
  - engine assembly,crankshaft - failure,total (contributing factor)
- Forced landing, descent - emergency
- Main gear collapsed, landing - flare/touchdown
  - landing gear,gear locking mechanism - not engaged (cause)
  - gear extension - attempted, pilot in command
  - terrain condition - roadway/highway
  - terrain condition - ditch

## Analysis

THE AIRPLANE WAS IN CRUISE FLIGHT WHEN THE PILOT NOTED AN ENGINE VIBRATION. A TOTAL LOSS OF POWER THEN OCCURRED. DURING THE FORCED LANDING TO A HIGHWAY, THE PILOT AND THE PASSENGER ATTEMPTED TO LOWER THE LANDING GEAR WITH THE EMERGENCY GEAR EXTENSION SYSTEM. PRIOR TO TOUCHDOWN, THE PILOT CONFIRMED THAT THE LEFT MAIN AND NOSE GEAR WERE DOWN AND LOCKED. DURING THE LANDING ROLL ONTO THE HIGHWAY, THE RIGHT MAIN GEAR COLLAPSED RESULTING IN THE AIRPLANE VEERING OFF THE ROADWAY SURFACE AND INTO A DITCH. THE FAA FOUND THE ENGINE'S CRANKSHAFT FRACTURED. NO OTHER ANOMALIES WERE FOUND.

## Aircraft

- Registration: [N9637X](https://openairdocs.org/aircraft/N9637X), registered now, S/N 21057937, built 1962 (OpenAirDocs)
- Reported make and model: CESSNA 210B
- Registry model: [Cessna 210B](https://openairdocs.org/model/cessna-210b) (registry code 2073410) (OpenAirDocs)
- Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21057937
- Airframe hours: 2634
- Engines: CONTINENTAL IO-470-S 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Turnage, Marvin E.
- Registered owner: Turnage, Marvin E.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 1, 1992, 48 hours before
- Departed: 3MO, LAKEVIEW, AR
- Destination: LIT, LITTLE ROCK, AR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 3,042 total, 450 in this make and model, 38 in the last 90 days, 12 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 9 knots, gusting 19
- Visibility: 10 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 61 °F, dew point 30 °F
- Altimeter: 30.00 inHg
- Observed at: FLP, 10 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 19921108045819A](https://openairdocs.org/incident/19921108045819A), Nov 8, 1992: Cessna 210B, Mountain View, AR, Substantial damage. Engine seized. Left main gear collapsed on forced landing. Engine crankshaft had fractured.

## Other investigations on N9637X (2)

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 CEN22LA378](https://openairdocs.org/ntsb/CEN22LA378), Aug 9, 2022: Cessna 210B (N9637X), Clinton, AR, substantial damage. Probable cause: A fatigue crack in the hydraulic actuator, which resulted in the loss of hydraulic fluid and the pilot’s inability to fully extend the landing gear.
- [NTSB UNK64X1239](https://openairdocs.org/ntsb/UNK64X1239), Apr 9, 1964: Cessna 210B (N9637X), Kimberling, MO, substantial damage

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.