# NTSB CHI92FA211: Stinson 108-3, N948C, Boonville, MO, July 25, 1992

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: July 25, 1992, 06:20 local (11:20 UTC)
- Place: Boonville, MO
- Location: 38.9614° N, 92.7462° W: Placed by OpenAirDocs: center of Boonville, MO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.9614&lon=-92.7462&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 1 serious, 1 minor
- Status: Completed, report September 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15299
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92FA211
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15299/pdf
- Page: https://openairdocs.org/ntsb/CHI92FA211

## Probable cause

INADEQUATE PREFLIGHT PLANNING, AND EXCEEDING THE PERFORMANCE CAPABILITY OF THE AIRPLANE BY THE PILOT-IN-COMMAND.

## Sequence of events

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

- In flight collision with object, takeoff - initial climb
  - object - wire,transmission
  - terrain condition - grass (contributing factor)
  - terrain condition - rough/uneven (contributing factor)
  - terrain condition - soft (contributing factor)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - aircraft performance,takeoff capability - exceeded
- In flight collision with object, descent - uncontrolled
  - object - vehicle
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE AIRPLANE STRUCK POWER LINES NEAR DEPARTURE END OF RUNWAY AND CRASHED INTO A PARKING LOT AND WAS DESTROYED BY A POST CRASH FIRE. THE AIRPLANE HAD FULL FUEL, THREE PASSENGERS, AND 100 HUNDRED POUNDS OF BAGGAGE. THE RUNWAY WAS 2600 FEET LONG, THE SURFACE WAS LONG GRASS, AND THE GROUND WAS SOFT AND UNEVEN. THE AIRPLANE WAS APPROXIMATELY 175 POUNDS OVER MAXIMUM GROSS WEIGHT. TAKEOFF DISTANCE REQUIRED FOR 50 FOOT OBSTACLE CLEARANCE WAS 3188 FEET.

## Aircraft

- Registration: [N948C](https://openairdocs.org/deregistered/N948C-1995-09-12), registration cancelled 1995-09-12, S/N 1083948 (OpenAirDocs)
- Reported make and model: STINSON 108-3
- Registry model: [Stinson 108-3](https://openairdocs.org/model/stinson-108-3) (registry code 9230408) (OpenAirDocs)
- Category: Airplane
- Serial number: 108-3948
- Airframe hours: 2221
- Engines: FRANKLIN 6A4-165-B3 165 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: J.D. Twenter
- Registered owner: J.D. Twenter
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Last inspection: Annual, September 14, 1991, 53 hours before
- Destination: NONE, HOLDEN BEACH, NC
- Airport: M84, Snoody Airport, runway 5, 2,600 × 70 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial; airplane ratings: single-engine land; instrument ratings: airplane, helicopter; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 5,000 total, 75 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 73 °F, dew point 72 °F
- Altimeter: 30.00 inHg
- Observed at: COU, 26 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 19920725027319A](https://openairdocs.org/incident/19920725027319A), Jul 25, 1992: Univar 1083, Boonville, MO, Destroyed, 2 fatal. Tail wheel snagged a powerline on climbout. Burned on impact. Hot day 175LBS over gross. Tall grass. Short runway.

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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