Aircraft Accident/Incident Report

Saint Clair, Minnesota 56080
Sunday, September 22, 1996 11:25 CDT

NTSB Narrative Summary Released at Completion of Accident

A witness first heard the airplane make a backfiring sound. The witness then observed the airplane coming out of the north, heading south toward his house at low altitude. When the airplane was over his house, it turned to the southwest. The witness saw the airplane initiate a 'fast' left turn and then go straight down into a corn field. Another witness said the airplane went over their yard at about 500 to 600 feet above the ground and headed south to southwest rocking its wings slightly. The witness saw the airplane initiate a right turn to the west and said that the engine sound changed from banging to a sputter. The witness said the airplane continued its turn to the north and started come back toward them. A third witness said he saw the airplane go straight down into the corn field. He also said that the airplane 'got about half a turn,' toward the east before it hit. Examination of the wreckage revealed that the engine's #2 cylinder exhaust valve was stuck open.

NTSB Probable Cause Narrative

a loss of power due to the engine's #2 cylinder exhaust valve stuck open, and the pilot's failure to maintain airspeed.

Event Information

Type of Event Accident
Event Date 9/22/1996
Event Day of the Week Sunday
Time of Event 1125
Event Time Zone Central Daylight Time
Event City SAINT CLAIR
Event State MINNESOTA
Event Country --
Zipcode of the event site 56080
Event Date Year 1996
Event Date Month 9
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 1116 Central Daylight Time
Direction of event from weather observation facility (degrees) 340
Weather Observation Facility ID MKT
Elevation of weather observation facility 1020
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
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) 13
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1407
NTSB Notification Source --
NTSB Notification Date Sep 22 1996 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 10:21AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5373R
NTSB Number CHI96FA348
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172F
Aircraft Series Identifier 172F
Aircraft Serial Number 17252906
Certified Max Gross Weight 2150
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 18 1996 12:00AM
Airframe hours since last inspection 24
Airframe Hours 1454
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name STEVEN ALAN DIMMEL
Aircraft Owner Street Address 1792 390TH AVENUE
Aircraft Owner City JANESVILLE
Aircraft Owner State MN
Aircraft Owner Country
Aircraft Owner Zipcode 56048
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) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code ACQ
Departure City WASECA
Departure State MN
Departure Country
Departure Time 1200
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --