# NTSB LAX90DUM03: Parrigin RV-4, N810WP, Poway, CA, September 18, 1990

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: September 17, 1990, 17:30 local (Sep 18, 1990, 00:30 UTC)
- Place: Poway, CA
- Coordinates: 32.970394, -117.019317 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.9704&lon=-117.0193&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report November 23, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 26552
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX90DUM03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/26552/pdf
- Page: https://openairdocs.org/ntsb/LAX90DUM03

## Probable cause

THE PILOT'S PERFORMING LOW LEVEL ACROBATIC MANEUVERS AND FAILURE TO MAINTAIN AIRCRAFT CONTROL.

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - aerobatics - performed, pilot in command (cause)
  - altitude - inadequate (contributing factor)
  - aircraft control - not maintained, pilot in command (cause)
  - ostentatious display, pilot in command (cause)
- In flight collision with terrain/water, maneuvering

## Analysis

THE PILOT WAS PERFORMING LOW LEVEL AEROBATICS AT AN ALTITUDE OF 200 TO 300 FEET OVER A CONSTRUCTION SITE AT WHICH HE PREVIOUSLY WORKED. THERE WERE NO REPORTED MECHANICAL OR PHYSIOLOGICAL PROBLEMS PRIOR TO THE ACCIDENT.

## Aircraft

- Registration: [N810WP](https://openairdocs.org/deregistered/N810WP-1992-08-19), registration cancelled 1992-08-19, S/N 810 (OpenAirDocs)
- Reported make and model: PARRIGIN RV-4
- Registry model: [Parrigin William H RV-4](https://openairdocs.org/model/parrigin-william-h-rv-4) (registry code 056084L) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 810
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Parrigin, William H.
- Registered owner: William H Parrigin
- Airworthiness certificate: Special, Experimental (Special)
- Departed: SEE, EL CAJON, CA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; toxicology performed; flight hours: 500 total

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 68 °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 19900917039539A](https://openairdocs.org/incident/19900917039539A), Sep 17, 1990: Amtrvn VANSRV4, Poway, CA, Destroyed, 1 fatal. Crashed while performing aerobatics over construction site at low altitude. Was fired from site prior to flight.

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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