# NTSB CHI91LA246: Beech 35A, N7451N, Hager City, WI, August 4, 1991

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: August 4, 1991, 18:02 local (23:02 UTC)
- Place: Hager City, WI
- Coordinates: 44.640155, -92.560859 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.6402&lon=-92.5609&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report January 25, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15143
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI91LA246
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15143/pdf
- Page: https://openairdocs.org/ntsb/CHI91LA246

## Probable cause

THE FAILURE OF THE PILOT TO MAINTAIN AIRSPEED ABOVE STALLING SPEED WHILE MANEUVERING.

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - airspeed(vs) - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with object, descent - uncontrolled
  - object - tree(s)
  - object - residence

## Analysis

THE ACCIDENT AIRPLANE WAS MANEUVERING (ALTERNATING LEFT AND RIGHT STEEP BANKING TURNS) AT LOW ALTITUDE OVER A CIVIC CELEBRATION WITH THE LANDING GEAR AND FLAPS EXTENDED.  WITNESSES RECOUNTED THAT THE AIRPLANE WAS FLYING SLOWLY A IN RIGHT BANKING TURN WHEN IT SUDDENLY ROLLED TO THE LEFT AND DESCENDED INTO THE GROUND.  THE AIRPLANE PASSED THROUGH THE TOP OF A MATURE TREE BEFORE IT STRUCK AND UNOCCUPIED HOUSE.  A POST IMPACT FIRE ERUPTED INVOLVING BOTH THE AIRPLANE AND HOUSE.

## Aircraft

- Registration: N7451N (not matched to a registry record)
- Reported make and model: BEECH 35A
- Category: Airplane
- Serial number: D8835
- Engines: CONTINENTAL IO-520-B 285 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: George P. Sweasy
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, January 2, 2000
- Departed: RGK, RED WING, MN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; private; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; flight hours: 480 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 8 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 50 °F
- Observed at: MSP, 27 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 19910804031329A](https://openairdocs.org/incident/19910804031329A), Aug 4, 1991: Beech V35A, Hager City, WI, Destroyed, 1 fatal. Stalled,crashed and burned while maneuvering and banking steeply over a boat show. Struck trees and empty residence

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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