Aircraft Accident/Incident Report

Eola, Illinois 60519
Wednesday, March 5, 1986 17:06 CST

NTSB Narrative Summary Released at Completion of Accident

EVIDENCE SHOWS CO-PILOT CALLED, 'MAYDAY, UNCONTROLLED SPIN' AFTER ACFT RADAR TRACK SHOWED DECEL FROM 180 TO 120 KTS OVER 2 MIN PERIOD WHILE MAINTAINING CONSTANT 4000 FT CRZ ALT. CONSTANT ALT CONSISTENT WITH AUTOPILOT/AUTOTRIM USE, PARTICULARLY IN VIEW OF REPORTED TURBULENCE/ICING. ELEV TRIM FOUND AT APPROX 13 DEG NOSE UP. NO EVIDENCE FOUND OF PREIMPACT FAILURE OR MALFUNCTION IN ACFT PWRPLANTS, STRUCTURE OR SYSTEMS. EVIDENCE SUGGESTS SCENARIO OF CREW INATTENTION AFTER PWR REDUCTION WITH AUTOPILOT ALTITUDE SETTING. ON PWR APPLICATION, ACFT PITCHED UP FROM SLOW SPEED INTO UNCONTROLLED FLIGHT. DUTY DAY AT TIME OF MISHAP APPROACHING 11 HOURS.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 3/5/1986
Event Day of the Week Wednesday
Time of Event 1706
Event Time Zone Central Standard Time
Event City EOLA
Event State ILLINOIS
Event Country --
Zipcode of the event site 60519
Event Date Year 1986
Event Date Month 3
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 0
Weather Briefing Completeness Partial - limited by pilot
Investigator's weather source Weather Observation Facility
Time of the weather observation 1650 Central Standard Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID DPA
Elevation of weather observation facility 757
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 300
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Obscured
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 1
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) 0
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Unknown
Wind Speed (knots) 15
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Light
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 5
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 5
Investigating Agency NTSB
NTSB Docket Number (internal use) 2530
NTSB Notification Source --
NTSB Notification Date Mar 5 1986 12:00AM
NTSB Notification Time 1805
Fiche Number and/or location -used to find docket information 33458
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N513DC
NTSB Number CHI86FA098
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name MITSUBISHI
Aircraft Model MU-2B-60
Aircraft Series Identifier MU-2B-60
Aircraft Serial Number 1513 SA
Certified Max Gross Weight 11575
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 10
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Feb 24 1986 12:00AM
Airframe hours since last inspection --
Airframe Hours 1184
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name AIR HI HO, INC.
Aircraft Owner Street Address 110 W. 10TH ST.
Aircraft Owner City WILMINGTON
Aircraft Owner State DE
Aircraft Owner Country
Aircraft Owner Zipcode 19801
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 Yes
Departure Point Same as Event No
Departure Airport Code CGX
Departure City CHICAGO
Departure State IL
Departure Country
Departure Time 1645
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code DPA
Destination City WEST CHICAGO
Destination State IL
Destination Country
Specific Phase of Flight Descent
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 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --