Aircraft Accident/Incident Report

Mankato, Minnesota 56001
Sunday, July 17, 1988 4:45 CDT

NTSB Narrative Summary Released at Completion of Accident

AS THE PILOT LEVELED OFF AT HIS INTENDED CRUISE ALTITUDE, HE NOTED A LOSS OF OIL PRESSURE, THEN SAW OIL SPREAD UP OVER THE WINDSHIELD, RESTRICTING HIS VISIBILITY. THE PILOT PERFORMED EMERGENCY PROCEDURES, AND BEGAN DESCENDING TO THE NEAREST AIRPORT. DURING THE EMERGENCY DESCENT THE ENGINE SEIZED. THE PILOT WAS UNABLE TO REACH THE AIRPORT AND DESCENDED THROUGH SOME TREES BEFORE MAKING A FORCED LANDING IN A BEAN FIELD APPROXIMATELY 1/4 MILE FROM THE AIRPORT. THE LOSS OF OIL WAS DETERMINED TO BE DUE TO A CRACKED PROPELLER GOVERNOR OIL TUBE THROUGH WHICH OIL WAS PUMPED OVERBOARD.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/17/1988
Event Day of the Week Sunday
Time of Event 445
Event Time Zone Central Daylight Time
Event City MANKATO
Event State MINNESOTA
Event Country --
Zipcode of the event site 56001
Event Date Year 1988
Event Date Month 7
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 0
Degrees magnetic from airport 0
Airport Elevation 1020
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 453 Central Daylight Time
Direction of event from weather observation facility (degrees) 130
Weather Observation Facility ID RST
Elevation of weather observation facility 1317
Distance of event from weather observation facility (units?) 55
Time Zone of the weather observation CDT
Lighting Conditions Dawn
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 10000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 9
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 4
Injury Total None --
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 789
NTSB Notification Source --
NTSB Notification Date Jul 17 1988 12:00AM
NTSB Notification Time 930
Fiche Number and/or location -used to find docket information 36705
Date of most recent change to record Dec 13 2000 11:55AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2059Q
NTSB Number CHI88LA167
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 177RG
Aircraft Series Identifier 177RG
Aircraft Serial Number 177RG0429
Certified Max Gross Weight 2800
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 Apr 5 1988 12:00AM
Airframe hours since last inspection 34
Airframe Hours 1975
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name AIRLAKE AERO INC.
Aircraft Owner Street Address 10 CARRIAGE LANE
Aircraft Owner City BURNSVILLE
Aircraft Owner State MN
Aircraft Owner Country
Aircraft Owner Zipcode 55337
Operator is an individual? --
Operator Name AIRLAKE AERO, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 10 CARRIAGE LANE
Operator City BURNSVILLE
Operator State MN
Operator Country
Operator Zip code 55337
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 No
Departure Point Same as Event No
Departure Airport Code Y12
Departure City LAKEVILLE
Departure State MN
Departure Country
Departure Time 410
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code BFF
Destination City SCOTTSBLUFF
Destination State NE
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --