Aircraft Accident/Incident Report

Cairo, Missouri 65239
Saturday, December 6, 1997 9:30 CST

NTSB Narrative Summary Released at Completion of Accident

The pilot had climbed to 5,500 ft MSL & had trimmed the airplane at cruise power settings. He set the GPS navigation system for a direct flight, then engaged the autopilot & switched the fuel selector to the left auxiliary fuel tank. He remembered passing Herrington, KS, at which time, he set his radios for arrival at Topeka, Ks. From that point, he could not remember anything else about the flight until he 'awoke' in a flat hay field near Cairo, MO. (The airplane had touched down in a wings level attitude and slid about 525 ft before hitting a fence & small trees.) When the pilot 'initially awoke,' he was confused & thought he was still airborne. Eventually, he walked to a farm house & after waiting another 1 to 1-1/2 hr, an ambulance arrived to take him to a hospital. Subsequently, blood was drawn. Toxicology tests of his blood showed 26.8% saturation with carbon monoxide. Inspection of the airplane revealed the right muffler had a crack around one of its seams, which allowed exhaust fumes into the cabin heater housing & into the cabin. The airplane had recently been taken to an airplane service center for an annual inspection. The pilot decided to fly the airplane before the annual inspection had been signed off.

NTSB Probable Cause Narrative

a fractured muffler, failure of the owner/pilot to ensured that the annual maintenance inspection had been completed before flight, and subsequent pilot incapacitation due to carbon monoxide poisoning.

Event Information

Type of Event Accident
Event Date 12/6/1997
Event Day of the Week Saturday
Time of Event 930
Event Time Zone Central Standard Time
Event City CAIRO
Event State MISSOURI
Event Country --
Zipcode of the event site 65239
Event Date Year 1997
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 954 Central Standard Time
Direction of event from weather observation facility (degrees) 160
Weather Observation Facility ID COU
Elevation of weather observation facility 889
Distance of event from weather observation facility (units?) 42
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 1100
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) -6
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Unknown
Wind Speed (knots) 11
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 773
NTSB Notification Source --
NTSB Notification Date Dec 6 1997 12:00AM
NTSB Notification Time 1129
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:42PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8452P
NTSB Number CHI98LA055
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-24
Aircraft Series Identifier PA-24
Aircraft Serial Number 26-27
Certified Max Gross Weight 3600
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 30 1996 12:00AM
Airframe hours since last inspection 56
Airframe Hours 4014
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROBERT L. FRAYSER
Aircraft Owner Street Address 1505 N. ALEXANDER
Aircraft Owner City HOISINGTON
Aircraft Owner State KS
Aircraft Owner Country
Aircraft Owner Zipcode 67544
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code GBD
Departure City GREAT BEND
Departure State KS
Departure Country
Departure Time 710
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code TOP
Destination City TOPEKA
Destination State KS
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --