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NTSB Report
March 16, 1993 · Beech F33A · N5592A
Park, KS
Overview
Report Status
Probable Cause
Event Type
Accident
Date
March 16, 1993
Injury Outcomes
1 injury (1 serious injury)
Location
Park, KS
Aircraft
Beech F33A
Tail Number
N5592A
Operator
Niehus William B
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
CHI93LA114
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.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S PHYSICAL INCAPACITATION FOR REASON OR REASONS UNDETERMINED.
Full Narrative
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.
Flight
Event TypeAccident
Event Time09:30 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech F33A
Tail NumberN5592A
Aircraft CategoryAir
DamageSubstantial
OperatorNiehus William B
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-BA · Reciprocating · 285
Seats4
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 73 · None
Conditions
ConditionsVMC
LightDawn
Wind10° @ 20 kt
Visibility15 sm
CeilingBroken clouds 2500 ft
Temperature / Dew Point36 C / 23 C
Altimeter30.00 inHg
Observation Time18:50
Weather SourceWFAC