Waukegan Regional Airport
Aircraft Accident/Incident Report

Waukegan, Illinois 60085
Tuesady, June 15, 2004 13:24 CDT

NTSB Narrative Summary Released at Completion of Accident

The aircraft was substantially damaged during a hard landing, which subsequently collapsed the nose landing gear and wrinkled the fuselage. The pilot stated that the approach was "fairly" stabilized, however, he noted he was late getting set-up for landing. He did not recall how many green landing gear extension lights he observed prior to landing. The pilot reported that when the main landing gear touched down on landing the nose of the aircraft "immediately dropped to the runway." He reported that the aircraft came to rest headed straight down the runway, approximately on the centerline. The post-accident examination determined that the nose landing gear was in a retracted position in the wheel well. The remaining sections of the nose landing gear doors were wedged behind the landing gear strut. The lower, outboard section of the fuselage was wrinkled from the nose landing gear to a point approximately even with the windshield. The aircraft manufacturer stated that the nose landing gear doors are mechanically actuated.

NTSB Probable Cause Narrative

The pilot's misjudgment of the landing flare which resulted in a hard landing. Contributing factors were the subsequent overload and collapse of the nose landing gear.

Event Information

Type of Event Accident
Event Date 6/15/2004
Event Day of the Week Tuesday
Time of Event 1324
Event Time Zone Central Daylight Time
Event City Waukegan
Event State ILLINOIS
Event Country --
Zipcode of the event site 60085
Event Date Year 2004
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 422520N
Event Location Longitude 0875204W
Event Location Airport Waukegan Regional
Event Location Nearest Airport ID UGN
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 727
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1255 Central Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID UGN
Elevation of weather observation facility 727
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 70
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30.07
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 17406
NTSB Notification Source FAA
NTSB Notification Date Jun 15 2004 12:00AM
NTSB Notification Time 1418
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 30 2005 6:20AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office FAA-DuPage FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N77DK
NTSB Number CHI04LA155
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Mitsubishi
Aircraft Model MU-2B-40
Aircraft Series Identifier --
Aircraft Serial Number 449
Certified Max Gross Weight 10470
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 9
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 28 2003 12:00AM
Airframe hours since last inspection --
Airframe Hours 2509
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Daniel L. Knopper
Aircraft Owner Street Address 6597 W Knollwood
Aircraft Owner City West Bloomfield
Aircraft Owner State MI
Aircraft Owner Country USA
Aircraft Owner Zipcode 48322
Operator is an individual? Yes
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 No
Departure Point Same as Event No
Departure Airport Code PTK
Departure City Pontiac
Departure State MI
Departure Country USA
Departure Time 1230
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code UGN
Destination City Waukegan
Destination State IL
Destination Country USA
Specific Phase of Flight Landing - flare/touchdown
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident Last Inspection
Event Location Runway Number and Location 23
Runway Length 6000
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --