# NTSB MIA86LA221: Cessna 210B, N9620X, Hopewell, FL, July 30, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 30, 1986, 09:20 local (13:20 UTC)
- Place: Hopewell, FL
- Coordinates: 30.459035, -83.409942 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.4590&lon=-83.4099&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31680
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA86LA221
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31680/pdf
- Page: https://openairdocs.org/ntsb/MIA86LA221

## 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 - separation (cause)
  - engine assembly,crankshaft - fatigue (cause)
  - maintenance,inspection - improper, other maintenance personnel (cause)
- In flight collision with object, landing
  - object - tree(s)

## Analysis

FLIGHT EXPERIENCED COMPLETE ENGINE FAILURE WHEN CRANKSHAFT FAILED DUE TO FATIGUE CRACKING OF THE CRANKSHAFT CHEEK BETWEEN THE NUMBER 1 AND 2 RODBEARING JOURNAL. DURING THE SUBSEQUENT FORCED LANDING THE AIRCRAFT COLLIDED WITH TREES DUE TO THE PILOT NOT WANTING TO LAND ON A DIRT ROAD DUE TO AN UNSAFE INDICATION ON THE NOSE LANDING GEAR. EXAMINATION OF THE ENGINES RECORDS REVEALED THE ENGINE HAD SUSTAINED SUDDEN STOPPAGE IN MUD 25 FLIGHT HOURS BEFORE THE CRANKSHAFT FAILURE. THE ENGINE WAS NOT DISASSEMBLED AND INSPECTED AT THAT TIME AS REQUIRED BY THE ENGINE MANUFACTURER. ADDITIONALLY IT WAS LEARNED THE ENGINE HAD 1788 TOTAL FLIGHT HOURS SINCE FACTORY OVERHAUL. THE MANUFACTURER RECOMMENDS THAT THE ENGINE BE OVERHAULED EACH 1600 FLIGHT HOURS.

## Aircraft

- Registration: [N9620X](https://openairdocs.org/deregistered/N9620X-2014-11-24), registration cancelled 2014-11-24, S/N 21057920, 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: 21057920
- Airframe hours: 2832
- Engines: CONTINENTAL I0-470-S 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Fred C. Erickson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 17, 1986, 1 hours before
- Departed: 1X6, BRANDON, FL
- Destination: HUF, TERRE HAUTE, IN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 3,000 total, 2,000 in this make and model, 15 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 5 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 73 °F
- Altimeter: 29.00 inHg
- Observed at: TLH, 53 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 19860730036659A](https://openairdocs.org/incident/19860730036659A), Jul 30, 1986: Cessna 210B, Hopewell, FL, Substantial damage. Engine lost power when crankshaft broke. Owner failed to inspect engine after previous sudden stoppage.

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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