# NTSB NYC86LA245: Ryan-Navion A, N5146K, Lakeport, NY, September 14, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 14, 1986, 14:45 local (18:45 UTC)
- Place: Lakeport, NY
- Coordinates: 43.149906, -75.959281 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.1499&lon=-75.9593&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 10, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 30429
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC86LA245
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30429/pdf
- Page: https://openairdocs.org/ntsb/NYC86LA245

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise
  - lubricating system,oil gasket - loose (cause)
  - fluid,oil - leak (cause)
  - engine assembly - smoke
- Forced landing, descent - emergency
  - precautionary landing - performed, pilot in command
- On ground/water collision with object, landing - roll

## Analysis

THE ROCKER BOX COVER ON THE #6 CYLINDER HAD THE TOP AND BOTTOM SCREWS LOOSE AND THE CENTER SCREW MISSING, CAUSING OIL TO LEAK FROM THE BOTTOM OF THE ROCKER BOX COVER.

## Aircraft

- Registration: [N5146K](https://openairdocs.org/deregistered/N5146K-2014-10-27), registration cancelled 2014-10-27, S/N NAV-4-2046, built 1950 (OpenAirDocs)
- Reported make and model: Ryan-Navion A
- Registry model: [Ryan NAVION](https://openairdocs.org/model/ryan-navion) (registry code 6150160) (OpenAirDocs)
- Registry engine: [Continental E225 series](https://openairdocs.org/engine/continental-e225-series) (registry code 17015, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 4-2046
- Airframe hours: 4488
- Engines: CONTINENTAL E225 SERIES 225 horsepower reciprocating
- Damage: Substantial damage
- Fire: In-Flight
- Flight: Personal, Part 91
- Operator: Daniel R.Zaborny
- Registered owner: Daniel R. Zaborny
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 12, 1985
- Departed: NK03, DURHAMVILLE, NY
- Destination: CICERO, NY

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 777 total, 204 in this make and model, 647 as pilot in command, 29 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 10 knots, gusting 15
- Visibility: 20 statute miles
- Temperature: 64 °F, dew point 57 °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 19860914049799A](https://openairdocs.org/incident/19860914049799A), Sep 14, 1986: Navion STCNAVION, Bridgeport, NY, Substantial damage. The aircraft made a precautionary landing on a golf course and hit trees. Loose rocker cover caused engine to smoke.

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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