# NTSB CHI93LA114: Beech F33A, N5592A, Park, KS, March 16, 1993

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: March 16, 1993, 10:30 local (16:30 UTC)
- Place: Park, KS
- Coordinates: 39.109825, -100.36013 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.1098&lon=-100.3601&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report November 3, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15687
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA114
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15687/pdf
- Page: https://openairdocs.org/ntsb/CHI93LA114

## Probable cause

THE PILOT-IN-COMMAND'S PHYSICAL INCAPACITATION FOR REASON OR REASONS UNDETERMINED.

## Sequence of events

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

- In flight collision with terrain/water, descent - uncontrolled
  - became lost/disoriented, pilot in command
  - incapacitation, pilot in command (cause)
  - terrain condition - frozen

## Analysis

THE SEVENTY-THREE YEAR OLD PRIVATE PILOT WAS FLYING ON A SOLO CROSS COUNTRY FLIGHT.  FOR REASONS UNKNOWN HE BECAME PHYSICALLY INCAPACITATED. THE AIRPLANE DESCENDED UNTIL IMPACTING THE TERRAIN IN CRUISE FLIGHT.  THE AIRPLANE CAME TO A STOP AFTER SKIPPING AND SLIDING FOR 1,450 FEET.  A HOSPITAL CHECK REVEALED 9% CARBON MONOXIDE IN THE PILOT'S BLOOD; HOWEVER, A POST ACCIDENT EXAMINATION OF THE AIRPLANE AND THE COCKPIT HEAT MUFFLER, FAILED TO REVEAL THE SOURCE OF EXHAUST FUMES ENTERING THE CABIN.  THE PILOT SAID HE IS A NON-SMOKER. HE INDICATED THAT HIS LAST MEDICAL CERTIFICATE WAS ISSUED IN 1988.

## Aircraft

- Registration: N5592A (not matched to a registry record)
- Reported make and model: BEECH F33A
- Category: Airplane
- Serial number: CE-434
- Airframe hours: 1402
- Engines: CONTINENTAL IO-520-BA 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Niehus, William B.
- Registered owner: Niehus, William B.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 17, 1992, 60 hours before
- Departed: MLE, OMAHA, NE
- Destination: LBF, NORTH PLATTE, NE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 73; private; airplane ratings: single-engine land; medical: expired; seat: left; flight hours: 2,700 total, 1,600 in this make and model, 2,600 as pilot in command, 6 in the last 90 days, 4 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dawn
- Wind: 10° at 20 knots
- Visibility: 15 statute miles
- Lowest ceiling: 2,500 ft broken
- Temperature: 36 °F, dew point 23 °F
- Altimeter: 30.00 inHg
- Observed at: HLC, 35 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 19930316005489A](https://openairdocs.org/incident/19930316005489A), Mar 16, 1993: Beech F33A, Park, KS, Substantial damage. Indicates pilot asleep at control allowed aircraft to fly into the ground.

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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