# NTSB SEA84LA184: Heveron Sandpiper 83B, N4751N, Mcminnville, OR, July 27, 1984

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 26, 1984, 20:00 local (Jul 27, 1984, 03:00 UTC)
- Place: Mcminnville, OR
- Coordinates: 45.19012, -123.239883 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.1901&lon=-123.2399&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39977
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA84LA184
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39977/pdf
- Page: https://openairdocs.org/ntsb/SEA84LA184

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - downwind
  - weather condition - gusts (contributing factor)
  - flight into known adverse weather - attempted, pilot in command (cause)
  - overconfidence in aircraft's ability, pilot in command (contributing factor)
  - compensation for wind conditions - not performed, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

A STUDENT PILOT LOST CONTROL OF AN ULTRALIGHT VEHICLE WHEN HE ENCOUNTERED A LOCAL GUSTY WIND CONDITION AT 200' AGL AND COLLIDED WITH THE GROUND IN AN UNCONTROLLED DESCENT. THE ULTRALIGHT WAS BUILT FOR REGISTRATION AS AN EXPERIMENTAL AIRCRAFT, BUT DOCUMENTATION HAD NOT BEEN COMPLETED.

## Aircraft

- Registration: [N4751N](https://openairdocs.org/deregistered/N4751N-1991-02-19), registration cancelled 1991-02-19, S/N OR83112836B (OpenAirDocs)
- Reported make and model: HEVERON SANDPIPER 83B (SANDPIPER)
- Registry model: [Heveron William R 83B](https://openairdocs.org/model/heveron-william-r-83b) (registry code 05613FM) (OpenAirDocs)
- Category: Ultralight, amateur-built
- Serial number: 83112836B
- Engines: ROTAX 377 32 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: William R. Heveron
- Airworthiness certificate: Special, Experimental (Special)
- Destination: 4S5
- Airport: 4S5, Mcminnville Muncp. Arpt., runway 34, 5,600 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; student; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: center; flight hours: 22 total, 2 as pilot in command, 1 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 70° at 10 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 57 °F
- Altimeter: 30.00 inHg
- Observed at: HIO, 25 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 19840726038949A](https://openairdocs.org/incident/19840726038949A), Jul 26, 1984: Amtr SANDPIPER, Mcminnville, OR, Substantial damage. Stalled in airport traffic pattern during familiarization test flight. Student pilot blamed a dust devil for stall.

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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