# NTSB NYC93LA089: Boeing E75, N181RF, Zanesville, OH, April 23, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 23, 1993, 13:35 local (17:35 UTC)
- Place: Zanesville, OH
- Coordinates: 39.950531, -82.010238 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9505&lon=-82.0102&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 3, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 37314
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC93LA089
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37314/pdf
- Page: https://openairdocs.org/ntsb/NYC93LA089

## Probable cause

IMPROPER USE OF THE THROTTLE BY THE PILOT.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, approach - vfr pattern - final approach
  - throttle/power control - improper use of, pilot in command (cause)
- Forced landing, approach
- In flight collision with object, on ground/water collision with object
  - object - tree(s)

## Analysis

THE PILOT WAS HIGH AND ABOUT 5 MILES OUT ON THE APPROACH WHEN HE PULLED THE THROTTLE TO IDLE AND CONTINUED TOWARD THE RUNWAY.  WHEN HE REALIZED HE WAS LOW, HE ADVANCED THE THROTTLE; HOWEVER, THERE WAS NO RESPONSE FROM THE ENGINE.  THE PILOT MADE A FORCED LANDING IN A WOODED AREA.  NO MECHANICAL DEFECTS WERE FOUND WITH THE AIRPLANE OR ENGINE.  WHEN INTERVIEWED AFTER THE ACCIDENT, THE PILOT AGREED THAT THE ENGINE WOULD NEED SEVERAL SECONDS TO BUILD UP POWER WITH THE THROTTLE AT IDLE.

## Aircraft

- Registration: [N181RF](https://openairdocs.org/aircraft/N181RF), registered now, S/N 75-5553 (OpenAirDocs)
- Reported make and model: BOEING E75
- Registry model: [Boeing E75](https://openairdocs.org/model/boeing-e75) (registry code 1380120) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-5553
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Thomas T. Ungurean
- Registered owner: Thomas T. Ungurean
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, June 25, 1992, 67 hours before
- Departed: OH82, ADAMVILLE, OH
- Airport: Terry Thompson, runway 27, 2,000 × 100 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; student; medical: class 3, valid medical--no waivers/lim.; seat: rear; flight hours: 175 total, 130 in this make and model, 130 as pilot in command, 25 in the last 90 days, 10 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 340° at 5 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 57 °F, dew point 21 °F
- Altimeter: 30.00 inHg
- Observed at: ZZV, 8 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 19930423020749A](https://openairdocs.org/incident/19930423020749A), Apr 23, 1993: Boeing E75, Zanesville, OH, Substantial damage. High on approach idled engine. Became low. Engine failed respond. Landed in trees. Engine slow respond when cool.

## Other investigations on N181RF (1)

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.

- [NTSB ERA26LA224](https://openairdocs.org/ntsb/ERA26LA224), May 29, 2026: Boeing E75 (N181RF), Dresden, OH, substantial damage, investigation ongoing

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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