# NTSB CHI84LU009: Quicksilver MX, Aurora, IL, August 19, 1984

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: August 19, 1984, 11:52 local (16:52 UTC)
- Place: Aurora, IL
- Location: 41.7606° N, 88.3201° W: Placed by OpenAirDocs: center of Aurora, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.7606&lon=-88.3201&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): 12796
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84LU009
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12796/pdf
- Page: https://openairdocs.org/ntsb/CHI84LU009

## 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 - base turn
  - precautionary landing - simulated, pilot in command
  - weather condition - gusts (contributing factor)
  - airspeed - inadequate, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PLT WAS PRACTICING POWER-OFF, SIMULATED FORCED LANDING PATTERS OVER FARM FIELDS. DURING A TURN AT APRX 200 FT AGL, THE ULTRALIGHT DECELERATED TO A VERY SLOW SPEED & SUBSEQUENTLY STALLED. THE PLT WAS UNABLE TO RECOVER FROM THE STALL BEFORE THE ULTRALIGHT IMPACTED THE GROUND. THE WINDS WERE REPORTED TO BE GUSTING TO 15 KTS.

## Aircraft

- Registration: UNREG (not matched to a registry record)
- Reported make and model: QUICKSILVER MX
- Category: Ultralight, amateur-built
- Engines: ROTAX 377 34 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 103
- Registered owner: Juanita E. Haas
- Departed: AURORA, IL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; airplane ratings: single-engine land; medical: unknown, unknown; seat: center; flight hours: 200 total, 200 in this make and model, 200 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: variable at 10 knots, gusting 15
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 79 °F

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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