# NTSB CHI86LA062: Navion A, N4000G, Cincinnati, OH, January 11, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 11, 1986, 12:00 local (17:00 UTC)
- Place: Cincinnati, OH
- Location: 39.4333° N, 84.5478° W: Placed by OpenAirDocs from NTSB’s distance and direction from BUTLER COUNTY RGNL/HOGAN FLD (HAO), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.4333&lon=-84.5478&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13404
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI86LA062
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13404/pdf
- Page: https://openairdocs.org/ntsb/CHI86LA062

## 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,piston - failure,total (cause)
  - engine assembly,connecting rod - failure,total (cause)
  - engine assembly,cylinder - failure,total (cause)
- Forced landing, descent - emergency
- Main gear collapsed, landing - flare/touchdown
  - unsuitable terrain or takeoff/landing/taxi area - inadvertent use, pilot in command (contributing factor)

## Analysis

TEN MINUTES AFTER TAKEOFF THE PLT HEARD A LOUD BANG FOLLOWED BY A LOSS OF ENG PWR. THE RIGHT MAIN GEAR SEPARATED DURING THE FORCED LANDING IN A ROUGH FIELD. EXAMINATION DISCLOSED THE PISTON HAD SEPARATED FROM THE WRIST PIN CAUSING THE #5 CYLINDER TO SEPARATE FROM THE BLOCK.

## Aircraft

- Registration: N4000G (not matched to a registry record)
- Reported make and model: NAVION A
- Category: Airplane
- Serial number: N41920
- Airframe hours: 3090
- Engines: CONTINENTAL E185-9 205 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: R. L. Brooks
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 17, 1985, 8 hours before
- Departed: HAO, HAMILTON, OH
- Destination: I77, CINCINNATI, OH
- Airport: HAO, Hamilton

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 52; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 475 total, 76 in this make and model, 7 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 8 knots
- Visibility: 4 statute miles
- Lowest ceiling: none
- Temperature: 36 °F, dew point 27 °F
- Altimeter: 30.00 inHg
- Observed at: CIN, 12 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 19860111000599A](https://openairdocs.org/incident/19860111000599A), Jan 11, 1986: Tmpson NAVIONA, Cincinnati, OH, Substantial damage. Engine failed and gear collapsed during forced landing in a field. Piston wrist pin had separated.

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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