# NTSB SEA92LA139: Harriman N-3 Ultra PUP, N30843, Arlington, WA, June 28, 1992

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 28, 1992, 10:45 local (17:45 UTC)
- Place: Arlington, WA
- Coordinates: 48.179626, -121.669509 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.1796&lon=-121.6695&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 9, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 42844
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA92LA139
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42844/pdf
- Page: https://openairdocs.org/ntsb/SEA92LA139

## Probable cause

THE PARTIAL LOSS OF ENGINE POWER, CAUSE UNDETERMINED.

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, approach - vfr pattern - base leg/base to final
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, descent - emergency

## Analysis

THE PILOT REPORTED AN INTERMITTENT LOSS OF ENGINE POWER WHILE ON APPROACH FOR LANDING AND HE INITIATED AN EMERGENCY FORCED LANDING TO A ROAD. THE ACFT STRUCK TREES AND IMPACTED IN A FIELD BESIDE THE ROAD.  EXAMINATION OF THE WRECKAGE REVEALED EVIDENCE THAT ENGINE POWER WAS APPLIED AT THE TIME OF IMPACT AND NO EVIDENCE OF MECHANICAL MALFUNCTION OR FAILURE OF THE ENGINE.

## Aircraft

- Registration: [N30843](https://openairdocs.org/deregistered/N30843-2013-09-24), registration cancelled 2013-09-24, S/N 1367, built 1992 (OpenAirDocs)
- Reported make and model: HARRIMAN N-3 ULTRA PUP (N-3 ULTRA)
- Registry model: [Harriman John N-3 ULTRA PUP](https://openairdocs.org/model/harriman-john-n-3-ultra-pup) (registry code 05618ZH) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1367
- Airframe hours: 14
- Engines: VOLKSWAGEN reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Harriman, John W
- Registered owner: Harriman, John W.
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, April 10, 1992, 14 hours before
- Departed: S88, ARLINGTON, WA
- Destination: S88
- Airport: S88, Arlington Municipal, runway 16

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 7 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 57 °F
- Altimeter: 29.00 inHg

## 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 19920628021939A](https://openairdocs.org/incident/19920628021939A), Jun 28, 1992: Amtr ULTRAPUP, Arlington, WA, Destroyed. Intermittant power on approach. Hit trees landing on road. Had power at impact. No engine defects found. Not rated.

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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