Individually Owned: 150,657
Corporate Owned: 137,281
Tri-County Regional Airport
Aircraft Accident/Incident Report
Lone Rock, Wisconsin 53556
Tuesady, May 4, 1993 1:40 CDT
NTSB Narrative Summary Released at Completion of Accident
THE PILOT OF A TWIN-ENGINE CARGO AIRPLANE SHUT DOWN THE LEFT ENGINE AND FEATHERED THE PROPELLER DUE TO A LOSS OF ENGINE OIL. THE FAA ARTCC HANDLING THE FLIGHT VECTORED THE AIRPLANE TOWARD A VOR. DUE TO THE AIRPLANE'S ALTITUDE AND DISTANCE FROM THE CENTER'S RADAR, THE PILOT OF THE AIRPLANE HAD TO PERFORM A FULL INSTRUMENT APPROACH PROCEDURE. THE AIRPLANE MAINTAINED ITS ENROUTE ASSIGNED ALTITUDE UNTIL PASSING THE VOR OUTBOUND. NTAP READOUTS SHOW THE AIRPLANE DESCENDING THROUGHOUT THE PROCEDURE TURN AND INBOUND LEG OF THE APPROACH. THE AIRPLANE'S LAST RADAR CONTACT WAS 300 FEET BELOW THE INBOUND ALTITUDE FOR THE APPROACH WHILE OUTSIDE THE FINAL APPROACH FIX. THE AIRPLANE COLLIDED WITH TREES AND TERRAIN APPROXIMATELY 2 1/4 MILES FROM THE AIRPORT. THE VOR IS 5.5 MILES FROM THE AIRPORT. THE ON-SCENE INVESTIGATION REVEALED THE LEFT ENGINE'S PROPELLER HAD BEEN FEATHERED, ITS NUMBER NINE CYLINDER MOUNTING STUDS ON THE ENGINE'S CASE WERE CRUSHED DOWNWARD OR WERE BROKEN OFF AT THE CASE'S SURFACE, AND THE LANDING GEAR HAD BEEN EXTENDED.
NTSB Probable Cause Narrative
was a pre-mature extension of the landing gear by the pilot which resulted in the inability of the pilot to maintain the minimum descent altitude. Factors related to the accident were the loose cylinder and loss of oil.
Event Information
| Type of Event | Accident |
| Event Date | 5/4/1993 |
| Event Day of the Week | Tuesday |
| Time of Event | 140 |
| Event Time Zone | Central Daylight Time |
| Event City | LONE ROCK |
| Event State | WISCONSIN |
| Event Country | -- |
| Zipcode of the event site | 53556 |
| Event Date Year | 1993 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | TRI-COUNTY REGIONAL |
| Event Location Nearest Airport ID | LNR |
| 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 | 717 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 50 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 100 |
| Weather Observation Facility ID | MSN |
| Elevation of weather observation facility | 862 |
| Distance of event from weather observation facility (units?) | 38 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 900 |
| Lowest Non-Ceiling Height | 900 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 3 |
| Air Temperature at event time (in degrees celsius) | 15 |
| Dew Point at event time (in degress fahrenheit) | 14 |
| Wind Direction (degrees magnetic) | 140 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| 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 | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1261 |
| NTSB Notification Source | -- |
| NTSB Notification Date | May 4 1993 12:00AM |
| NTSB Notification Time | 730 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 11 2000 1:18PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N80CB |
| NTSB Number | CHI93FA158 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | E-18S |
| Aircraft Series Identifier | E-18S |
| Aircraft Serial Number | BA257 |
| Certified Max Gross Weight | 10100 |
| 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 | AAIP |
| Date of Last Inspection | Apr 2 1993 12:00AM |
| Airframe hours since last inspection | 93 |
| Airframe Hours | 15027 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | ROBERT R. BURWELL |
| Aircraft Owner Street Address | 15671 BENDER LANE |
| Aircraft Owner City | WEST CHICAGO |
| Aircraft Owner State | IL |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 60185 |
| Operator is an individual? | -- |
| Operator Name | VIKING EXPRESS, INC. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 43W518 ROUTE 30 |
| Operator City | SUGAR GROVE |
| Operator State | IL |
| Operator Country | |
| Operator Zip code | 60554 |
| Operator Code | CHRA |
| Owner has at least one certificate | Yes - certificate holder |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | ARR |
| Departure City | AURORA |
| Departure State | IL |
| Departure Country | |
| Departure Time | 35 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | MSP |
| Destination City | MINNEAPOLIS |
| Destination State | MN |
| Destination Country | |
| Specific Phase of Flight | Approach |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:34AM |
| 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 | -- |