# NTSB LAX87DUG05: Eipper Quicksilver MX II, N4628G, Corona, CA, July 13, 1987

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: July 12, 1987, 17:20 local (Jul 13, 1987, 00:20 UTC)
- Place: Corona, CA
- Location: 33.8753° N, 117.5664° W: Placed by OpenAirDocs: center of Corona, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.8753&lon=-117.5664&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report May 27, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 25300
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX87DUG05
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25300/pdf
- Page: https://openairdocs.org/ntsb/LAX87DUG05

## Sequence of events

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

- Loss of control - in flight, landing
  - weather condition - gusts (contributing factor)
  - flight into known adverse weather - continued, pilot in command (cause)
  - airspeed(vs) - not maintained, pilot in command (cause)
  - stall - uncontrolled, pilot in command (cause)
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

WHILE ATTEMPTING TO LAND ON RUNWAY 25 AT THE CORONA AIRPORT, CORONA, CALIFORNIA, IN GUSTING WIND CONDITIONS, THE AIRCRAFT STALLED AND COLLIDED WITH THE TERRAIN. THE PILOT SAID THAT THE 'EXTREME GUSTY WIND CONDITIONS' COMBINED WITH A VERY LIGHT AND STABLE AIRCRAFT 'CONTRIBED' (SIC) TO HIS LOSS OF CONTROL OF THE AIRCRAFT. THE PILOT FURTHER STATED THAT 'WIND BLOWING OVER TREES CAUSES ROLLING TURBULENCE'.

## Aircraft

- Registration: [N4628G](https://openairdocs.org/deregistered/N4628G-2012-12-11), registration cancelled 2012-12-11, S/N 1702, built 1983 (OpenAirDocs)
- Reported make and model: EIPPER QUICKSILVER MX II (QUICKSILVE)
- Registry model: [Keith Dennis E QUICKSILVER MX II](https://openairdocs.org/model/keith-dennis-e-quicksilver-mx-ii) (registry code 05675QM) (OpenAirDocs)
- Registry engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050, reciprocating) (OpenAirDocs)
- Category: Ultralight, amateur-built
- Serial number: 3450481
- Airframe hours: 162
- Engines: ROTAX 503 reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Fred Lee Turner
- Registered owner: Perry E. Hubbs
- Airworthiness certificate: Special, Experimental (Special)
- Departed: LAKE ELSINORE, CA
- Destination: L66, CORONA, CA
- Airport: L66, Corona Municipal, runway 25, 3,200 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; student; medical: class 3, valid medical--w/ waivers/lim; flight hours: 95 total, 38 in this make and model, 25 as pilot in command, 38 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 285° at 12 knots, gusting 30
- Visibility: 5 statute miles
- Lowest ceiling: none

## 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 19870712034099A](https://openairdocs.org/incident/19870712034099A), Jul 12, 1987: Amtr QUICKSILVER, Corona, CA, Substantial damage. The ultralight aircraft stalled during landing. The student was operating the aircraft in very gusty winds.

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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