# NTSB DEN89LA165: Henry Vickers HCV-110, N4831N, Newcastle, WY, July 4, 1989

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 4, 1989, 07:15 local (13:15 UTC)
- Place: Newcastle, WY
- Coordinates: 43.840747, -104.209037 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.8407&lon=-104.2090&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 29, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 17742
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN89LA165
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17742/pdf
- Page: https://openairdocs.org/ntsb/DEN89LA165

## Probable cause

THE FAILURE TO THE MAGNETO. THE SELECTION OF A POWERPLANT WITH A SINGLE MAGNETO SYSTEM WAS AN IMPROPER CHOICE AND DIRECTLY CONTRIBUTED TO THE CAUSE. THE PILOT'S MISJUDGEMENT OF THE WIND FOR THE APPROACH TO A FORCED LANDING RESULTED IN AN IMPROPER GROUND CONTACT.

## 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
  - ignition system,magneto - failure,total (cause)
- Forced landing, descent - emergency
- Hard landing, landing - flare/touchdown
  - planned approach - poor, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
  - landing gear,main gear - overload

## Analysis

THE ACFT HAD BEEN AIRBORNE FOR ABOUT ONE HOUR WHEN THE ENG LOST POWER. THE PLT ATTEMPTED A FORCED LANDING AND PICKED AN OPEN AREA. STRONG SURFACE WINDS RESULTED IN AN UNDERSHOOT OF THE SELECTED AREA AND WHEN HE TRIED TO STRETCH THE GLIDE THE ACFT STALLED AND LANDED HARD. THE PLT SAID THE ENG IS FROM A GROUND POWER UNIT AND HAS ONLY ONE MAGNETO. HE SAID THE MAGNETO COIL FAILED.

## Aircraft

- Registration: [N4831N](https://openairdocs.org/deregistered/N4831N-2003-10-08), registration cancelled 2003-10-08, S/N 1000, built 1984 (OpenAirDocs)
- Reported make and model: HENRY VICKERS HCV-110
- Registry model: [Vickers Henry HCV-110](https://openairdocs.org/model/vickers-henry-hcv-110) (registry code 05613CE) (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: 1000
- Airframe hours: 87
- Engines: CONTINENTAL GPV 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Vickers, Henry C.
- Registered owner: Vicker, Henry C
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, July 3, 1988, 26 hours before
- Departed: ECS, NEWCASTLE, WY
- Destination: ECS

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 65; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; flight hours: 484 total, 87 in this make and model, 3 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 25 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 70 °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 19890704026459A](https://openairdocs.org/incident/19890704026459A), Jul 4, 1989: Amtr HCV110, Newcastle, WY, Substantial damage. Engine lost power,stalled trying to stretch glide to open field. Ground power unit engine single magneto defective.

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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