NTSB Identification: MKC83FCA01
14 CFR Part 91: General Aviation
Accident occurred Monday, October 25, 1982 in ST. CHARLES, MO
Probable Cause Approval Date: 10/25/1983
Aircraft: PIPER PA-28-161, registration: N8184Y
Injuries: 4 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT CRASHED ON THE NORTH BOUNDARY OF THE ARPT WITHIN MINUTES AFTER HAVING BEEN SEEN DEPARTING RWY 27. DENSE GROUND FOG PREVAILED AT THE CRASH SITE. APPROXIMATELY 1-1/2 HOURS AFTER THE ACCIDENT EXAMINATION DISCLOSD VERY HEAVY FROST ON ALL ACFT PARKED ADJACENT TO THE SPOT WHERE THE ACFT HAD BEEN SEEN PARKED FOR TWO DAYS. ACCORDING TO THE PERSON WHO DROVE THE PLT TO THE ARPT THERE WAS FROST ON THE ACFT WHEN THEY ARRIVED AT THE ARPT. HE FURTHER STATED THAT HE DID NOT SEE THE PLT REMOVE FROST FROM ANY PART OF THE ACFT EXCEPT THE WINDSHIELD. THE CARBURETOR HEAT VALVE WAS FOUND JAMMED IN THE FULL HOT POSITION. ACCORDING TO ENGINEERING DATA OBTAINED FROM PIPER THE HEAT RISE OF THE CARB HEAT SYSTEM IS 129 DEG F AT 75% POWER & 28 DEG F AMBIENT AIR TEMP. THE POWER LOSS DUE TO CARB HEAT IS 1% FOR EACH 10 DEG HEAT RISE.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

CHECKLIST..NOT USED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

CARBURETOR HEAT..IMPROPER USE OF..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING..ICE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PROPER CLIMB RATE..NOT ATTAINED..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..FOG

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