# NTSB DEN83LA048: Cessna P210N, N3886P, Glade Park, CO, January 8, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 7, 1983, 17:13 local (Jan 8, 1983, 00:13 UTC)
- Place: Glade Park, CO
- Coordinates: 38.999404, -108.730804 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.9994&lon=-108.7308&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16031
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN83LA048
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16031/pdf
- Page: https://openairdocs.org/ntsb/DEN83LA048

## 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 - normal
  - engine assembly,crankshaft - loose (cause)
  - engine assembly,connecting rod - failure,total (cause)
  - fluid,oil - contamination (cause)
- Forced landing, landing - flare/touchdown
- Complete gear collapsed, landing - flare/touchdown
  - landing gear,main gear attachment - overload (contributing factor)
  - landing gear,nose gear assembly - overload (contributing factor)

## Analysis

THE ACFT LANDING GEAR COLLAPSED DURING A FORCED LANDING AFTER AN ENGINE FAILURE. THE PILOT SAID HE LOST MANIFOLD AND OILPRESSURE AND TURNED BACK TOWARD GRAND JUNCTION WHEN THE ENGINE BEGAN MAKING LOUD NOISES. A LANDING WAS MADE ON A SLIPPERY ROAD AND THE ACFT SKIDDED AND COLLAPSED THE GEAR. TELEDYNE-CONTINENTAL DECIDED THAT A THRUST WASHER HALF HAD BEEN LEFT OUT OF THE ENGINE DURING MANUFACTURE. THIS ALLOWED EXCESSIVE MOVEMENT OF THE CRANKSHAFT WHICH SIDE-LOADED AND FAILED #2 CONNECTING ROD AND DAMAGED #1 ROD.

## Aircraft

- Registration: [N3886P](https://openairdocs.org/aircraft/N3886P), registered now, S/N P21000068, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA P210N
- Registry model: [Cessna P210N](https://openairdocs.org/model/cessna-p210n) (registry code 2073454) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: P21000068
- Airframe hours: 1382
- Engines: CONTINENTAL TSIO-520-P 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: William J. Welch
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 2, 1982, 198 hours before
- Departed: BJC, BROOMFIELD, CO
- Destination: TPH, TONOPAH, NV
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,746 total, 464 in this make and model, 1,602 as pilot in command, 52 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 4 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 39 °F, dew point 36 °F
- Altimeter: 30.00 inHg
- Observed at: GJT, 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 19830107002029A](https://openairdocs.org/incident/19830107002029A), Jan 7, 1983: Cessna P210N, Glade Park, CO, Substantial damage. Engine suffered internal failure from lack of oil. Slid off a road landing. Crankshaft thrust washer not installed.

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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