Aircraft Accident/Incident Report

Copemish, Michigan 49625
Saturday, July 27, 2002 12:30 EDT

NTSB Narrative Summary Released at Completion of Accident

The airplane was destroyed during an on-ground fire following an emergency descent/landing due to an in-flight fire. The pilot reported that he smelled smoke followed by the cabin filling with heavy black smoke. The pilot stated flames began to enter the cockpit as he maneuvered the airplane for a landing in an agricultural field. The airplane nosed over during the landing. The left exhaust stack assembly contained a fatigue fracture adjacent to the main collector welded joint. The fracture was in both the heat affected zone and parent material. The fracture initiated in multiple locations on the outside surface of the tube and progressed through a fatigue mechanism. Energy dispersive spectroscopy (EDS) confirmed that both the weld and tube material met design specifications. The weld profile contained no apparent flaws. The left exhaust stack assembly had accumulated approximately 100 hours since new. The design of the Cessna supplied left exhaust stack assembly differs from the comparable Knisley PMA assembly. The Cessna assembly has a two-piece main collector. The two halves are stamped-out and joined together with a seam weld. The weight of the turbocharger assembly is supported in part by the left exhaust stack assembly. The Knisley main collector is manufactured by welding several tube sections together. Knisley issued a mandatory service bulletin that called for the removal of their left exhaust stack assembly and its replacement with the current Cessna assembly or FAA approved equivalent. The service bulletin states that the replacement was instituted because the Knisely assembly was not designed to carry the load of the turbocharger and compressor.

NTSB Probable Cause Narrative

The in-flight engine and cabin fire caused by a fatigue fracture of the left exhaust stack assembly. An additional cause was the part's inadequate design by the aftermarket part manufacturer. A factor to the accident was the soft field in which the emergency landing was made.

Event Information

Type of Event Accident
Event Date 7/27/2002
Event Day of the Week Saturday
Time of Event 1230
Event Time Zone Eastern Daylight Time
Event City Copemish
Event State MICHIGAN
Event Country --
Zipcode of the event site 49625
Event Date Year 2002
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 442742N
Event Location Longitude 0855017W
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1255 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 237
Weather Observation Facility ID MBL
Elevation of weather observation facility 621
Distance of event from weather observation facility (units?) 21
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 2300
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 28
Dew Point at event time (in degress fahrenheit) 21
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.79
Density Altitude (feet) 2460
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious 2
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 15271
NTSB Notification Source FAA
NTSB Notification Date Jul 27 2002 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 28 2004 3:34PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office FAA - Grand Rapids FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N756CS
NTSB Number CHI02LA218
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground and In-flight
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model TR182
Aircraft Series Identifier --
Aircraft Serial Number R18201041
Certified Max Gross Weight 3100
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 3 2002 12:00AM
Airframe hours since last inspection 88.6
Airframe Hours 3394.2
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name James D. Davis
Aircraft Owner Street Address 4115 North Amber Road
Aircraft Owner City Scottsville
Aircraft Owner State MI
Aircraft Owner Country USA
Aircraft Owner Zipcode 49454
Operator is an individual? No
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? --
Certified for Part 133 or 137 Operation --
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) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code LDM
Departure City Ludington
Departure State MI
Departure Country USA
Departure Time 1215
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code TVC
Destination City Traverse City
Destination State MI
Destination Country USA
Specific Phase of Flight Emergency descent/landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Feb 20 2004 9:18AM
User who most recently changed record SULP
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --