# NTSB BFO84FU001: Eipper Quicksilver MX, Elkton, MD, July 4, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: July 3, 1984, 20:10 local (Jul 4, 1984, 00:10 UTC)
- Place: Elkton, MD
- Location: 39.5777° N, 75.8325° W: Placed by OpenAirDocs from NTSB’s distance and direction from CLAREMONT (58M), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.5777&lon=-75.8325&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): 11109
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO84FU001
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11109/pdf
- Page: https://openairdocs.org/ntsb/BFO84FU001

## Sequence of events

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

- Airframe/component/system failure/malfunction, maneuvering
  - judgment - poor, pilot in command (cause)
  - overconfidence in aircraft's ability, pilot in command (contributing factor)
  - maneuver - improper, pilot in command (cause)
  - wing - failure,total (cause)
  - design stress limits of aircraft - exceeded, pilot in command (cause)
- Loss of control - in flight, maneuvering
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE ULTRALIGHT PILOT HAD BEEN PRACTICING MANEUVERS THAT WEREDESCRIBED AS WHIP STALLS WHICH WERE NOT TAUGHT OR AUTHORIZEDBECAUSE OF THE EXCESSIVE 'G' FORCES IMPOSED. AN INSTRUCTOR CHECKED HIS MACHINE AND WARNED HIM OF THE DANGERS ON THE DAY OF THE ACCIDENT. THE PLT SAID HE UNDERSTOOD AND WOULD 'WATCH IT'. LATER THAT DAY HE PRACTICED SIMILAR MANEUVERS AGAIN AND THE LEFT WING FOLDED FROM NEGATIVE G FORCES. THIS MACHINE IS LIMITED TO 3 NEGATIVE 'G'S'. THE VEHICLE FELL FROM ABOUT 350 FT IN A VERTICAL UNCONTROLLED DESCENT AFTER THE WING FAILED.

## Aircraft

- Registration: UNREG (not matched to a registry record)
- Reported make and model: EIPPER QUICKSILVER MX (QUICKSILVE)
- Category: Ultralight
- Serial number: 5961
- Airframe hours: 22
- Engines: ROTAX 377 34 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 103
- Registered owner: Edward L. Newmarker
- Departed: 58M
- Airport: 58M, Raintree, runway 32, 2,600 × 75 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; airplane ratings: single-engine land; medical: unknown; seat: front; toxicology performed; flight hours: 24 total, 21 in this make and model, 21 as pilot in command, 21 in the last 90 days, 19 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 6 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 81 °F
- Altimeter: 30.00 inHg
- Observed at: ILG, 13 nm away

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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