# NTSB CHI85FA251: Neumann-Everett N2, N2287D, Cambridge, MN, June 24, 1985

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 24, 1985, 16:35 local (21:35 UTC)
- Place: Cambridge, MN
- Coordinates: 45.559062, -93.219329 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.5591&lon=-93.2193&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): 12847
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85FA251
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12847/pdf
- Page: https://openairdocs.org/ntsb/CHI85FA251

## 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 personal ability, pilot in command (contributing factor)
  - design stress limits of aircraft - exceeded, pilot in command (cause)
  - overconfidence in aircraft's ability, pilot in command (contributing factor)
  - horizontal stabilizer attachment - failure,total
  - wing,wing attachment fitting - failure,total
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE NEWLY RATED PRT PLT WAS ON HIS 12TH FLT IN THE RECENTLY CERTIFICATED HOMEBUILT THAT HE HAD DESIGNED AND BUILT HIMSELF. WHILE PERFORMING AN UNKNOWN MANEUVER BOTH HORIZONTAL STABILIZERS AND BOTH WINGS SEPARATED FROM THE ACFT. THE ACFT WAS RESTRICTED FROM PERFORMING AEROBATICS HOWEVER, AN ACFT LOG THE PLT KEPT REFLECTED THAT HE HAD FLOWN THE ACFT IN A STEEP DIVE RECOVERING AT 140 MPH. THE ACFT WAS REDLINED AT 103 MOH. HE HAD ALSO LOGGED THAT HAMMER HEADS AND WING OVERS WERE PERFORMED BY HIMSELF IN THIS ACFT.

## Aircraft

- Registration: [N2287D](https://openairdocs.org/deregistered/N2287D-2013-07-30), registration cancelled 2013-07-30, S/N N782, built 1978 (OpenAirDocs)
- Reported make and model: NEUMANN-EVERETT N2
- Registry model: [Neumann-Everett N2](https://openairdocs.org/model/neumann-everett-n2) (registry code 05653B8) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: N782
- Airframe hours: 11
- Engines: LYCOMING O-320-E3D 150 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: E. W. Neumann
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, May 10, 1985, 11 hours before
- Departed: CBG, CAMBRIDGE, MN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: center; toxicology performed; flight hours: 118 total, 11 in this make and model, 46 as pilot in command, 28 in the last 90 days, 8 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 13 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: MSP, 34 nm away

## 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 19850624029099A](https://openairdocs.org/incident/19850624029099A), Jun 24, 1985: Cambridge, MN, Destroyed. In flight structural failure after descent from FL117. Horizontal stabilizers initially failed. Prior vne exceeded.

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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