# NTSB NYC91LA094: Cessna T210N, N6237Y, Milleville, NJ, March 25, 1991

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: March 25, 1991, 09:01 local (14:01 UTC)
- Place: Milleville, NJ
- Location: 39.4021° N, 75.0393° W: Placed by OpenAirDocs: center of Millville, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.4021&lon=-75.0393&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor, 2 uninjured
- Status: Completed, report May 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 36895
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC91LA094
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/36895/pdf
- Page: https://openairdocs.org/ntsb/NYC91LA094

## Probable cause

THE TOTAL LOSS OF ENGINE POWER CAUSED BY MECHANICAL FAILURE, WHICH RESULTED IN THE PILOT LANDING THE AIRPLANE ON UNSUITABLE TERRAIN.

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise
  - engine assembly,valve,exhaust - failure,total (cause)
  - lubricating system - starvation
  - emergency procedure - initiated, pilot in command
- Forced landing, descent - emergency
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - soft
  - unsuitable terrain or takeoff/landing/taxi area - unavailable, pilot in command
- Nose gear collapsed, landing - roll

## Analysis

DURING DESCENT TO AVOID ICING CONDITIONS, THE PILOT STATED, 'I FELT A SURGE EFFECT FROM THE ENGINE.  THE OIL PRESSURE GAGE WENT TO 0 AND THE MP (MANIFOLD PRESSURE) WENT TO 15 17 INCHES.  FUEL PUMP USE AND MIXTURE RICH DID NOTHING.  WE STEERED TO A...FIELD...AFTER TOUCHDOWN...THE WHEELS HIT A BOGGY AREA, THE NOSE WHEEL STRUT BROKE...WE NOSED OVER.'  AN ENGINE TEARDOWN AT THE FACTORY REVEALED AN EXHAUST VALVE FROM NUMBER 5 CYLINDER HAD BROKEN OFF RESULTING IN A CONNECTING ROD FAILURE AND EVENTUAL CATASTROPHIC FRACTURE OF THE ENGINE CASING.

## Aircraft

- Registration: [N6237Y](https://openairdocs.org/aircraft/N6237Y), registered now, S/N 21064303, built 1981 (OpenAirDocs)
- Reported make and model: CESSNA T210N
- Registry model: [Cessna T210N](https://openairdocs.org/model/cessna-t210n) (registry code 2073456) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21064303
- Engines: CONTINENTAL T510-520R 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: John E. Naughton
- Registered owner: John E. Naughton
- Departed: ORH, WORCHESTER, MA
- Destination: DCA, WASHINGTON, DC
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 72; flight instructor, airline transport, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; flight hours: 13,800 total, 850 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 25 statute miles
- Lowest ceiling: 450 ft overcast
- Temperature: -0 °F, dew point -0 °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 19910325007519A](https://openairdocs.org/incident/19910325007519A), Mar 25, 1991: Cessna T210N, Milleville, NJ, Substantial damage. Engine surged and failed. Oil on windshield. No oil pressure. Nosed over in a field. Valve broke off was ingested.

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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