# NTSB CHI93LA101: Beech 200, N7257T, Chesterfield, MO, March 3, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 2, 1993, 18:30 local (Mar 3, 1993, 00:30 UTC)
- Place: Chesterfield, MO
- Coordinates: 38.649345, -90.529067 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.6493&lon=-90.5291&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report November 15, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15678
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA101
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15678/pdf
- Page: https://openairdocs.org/ntsb/CHI93LA101

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL AFTER ENCOUNTERING WHITEOUT CONDITIONS IN THE LANDING FLARE.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - weather condition - whiteout (contributing factor)
  - proper touchdown point - not attained, pilot in command (contributing factor)
  - terrain condition - snowbank (contributing factor)
  - directional control - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - snowbank
  - object - runway light

## Analysis

THE PILOT STATED THE ILS APPROACH WAS '...UNEVENTFUL TO WITHIN 2 (FEET) OF TOUCHDOWN, WHEN WE ENCOUNTERED THICK FOG AND...COMPLETE WHITEOUT LOSING ALL FORWARD VISIBILITY AND COMPLETE RUNWAY ENVIRONMENT AT TOUCHDOWN.'  THE AIRCRAFT TOUCHED DOWN LEFT OF THE RUNWAY CENTERLINE AND THE LEFT PROPELLER IMPACTED A SNOWBANK AT THE LEFT SIDE OF THE RUNWAY. THE AIRCRAFT VEERED OFF THE LEFT SIDE OF RUNWAY 8R (7,000' X 150') AND SKIDDED TO A STOP PERPENDICULAR TO AND FACING THE RUNWAY.  A WEATHER OBSERVATION TAKEN 9 MINUTES AFTER THE ACCIDENT REVEALED TEMPERATURE AND DEW POINT WERE BOTH 41 DEGREES FAHRENHEIT, WITH VISIBILITY 3/16 MILE IN LIGHT DRIZZLE AND FOG.

## Aircraft

- Registration: N7257T (not matched to a registry record)
- Reported make and model: BEECH 200
- Category: Airplane
- Serial number: BB-1246
- Airframe hours: 2386
- Engines: P&W PT6-42 850 horsepower turbo prop
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Bunge Corporation
- Registered owner: Bunge Corporation
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, November 25, 1992, 80 hours before
- Departed: DCU, DECATUR, AL
- Flight plan: IFR
- Airport: SUS, Spirit Of St. Louis, runway 8, 7,000 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial, flight instructor; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 17,000 total, 1,800 in this make and model, 16,000 as pilot in command, 22 in the last 90 days, 11 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 70° at 5 knots
- Lowest ceiling: 200 ft
- Temperature: 41 °F, dew point 41 °F
- Altimeter: 29.00 inHg
- Observed at: SUS, 1 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 19930302009979A](https://openairdocs.org/incident/19930302009979A), Mar 2, 1993: Beech B200, St Louis, MO, Substantial damage. Encountered fog bank on flare for landing. Struck protruding snowbank on left side runway. NOTAM on snowbank.

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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