# NTSB DEN84FU011: Eipper Quicksilver MX, Brighton, CO, September 20, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: September 20, 1984, 09:50 local (15:50 UTC)
- Place: Brighton, CO
- Coordinates: 39.950099, -104.789688 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9501&lon=-104.7897&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16265
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84FU011
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16265/pdf
- Page: https://openairdocs.org/ntsb/DEN84FU011

## Sequence of events

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

- In flight collision with terrain/water, maneuvering
  - judgment - poor, pilot in command (contributing factor)
  - maneuver - initiated, pilot in command
  - spiral - intentional, pilot in command
  - remedial action - delayed, pilot in command (cause)
  - proper altitude - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE ULTRALIGHT WAS TURNING IN A SPIRAL TURN TO THE RIGHT WHEN WITNESSES HEARD THE ENGINE STOP. THE ACFT WENT INTO A SPINAND CRASHED. WITNESSES SAID THE PLT HAD BEEN DOING THIS BEFORE WITH A PULL OUT AT ABOUT 50 FT AGL AND A RESTART OF THE ENGINE. THE HEIGHT OF THE ACFT AT SPIN ENTRY WAS ABOUT 500 FT AGL. EXAMINATION OF THE VEHICLE REVEALED THAT THE SWITCH FOR START/STOP WAS IN THE OFF POSITION.

## Aircraft

- Registration: UNREG (not matched to a registry record)
- Reported make and model: EIPPER QUICKSILVER MX (QUICKSILVE)
- Category: Ultralight
- Engines: Rotax 377 25 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 103
- Registered owner: Joe P. Swearingen

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; toxicology performed

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 70 °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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