Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Tinley Park, Illinois 60477
Saturday, February 20, 1999 10:45 CST
NTSB Narrative Summary Released at Completion of Accident
The pilot of the incident airplane said that in-flight at 1800 feet above mean sea level, the engine seized, the propeller bolts sheared, the propeller fell to the ground, and that he landed the airplane without any damage to the airplane. During an inspection of the engine, a 'B' nut on the oil pressure line to the turbocharger was found loose. The cylinders in the area of the 'B' nut were found with a dark, oily substance coating them. The turbocharger and its housing were found with a dark, charred, oily substance on it. Number one, four, five, and six crankshaft journals revealed distress. The number one crankshaft journal was found blue. The number four connecting rod was found broken and colored blue. The number four cylinder head was found separated from its base. The propeller hub and engine crankshaft flange mating surfaces were found with areas of distress. Three of the studs that held the propeller to the crankshaft flange were found with their fracture initiating on opposite sides of those studs. A top overhaul was performed 85 tachometer hours prior to the accident.
NTSB Probable Cause Narrative
the improper installation of the pressure oil line 'B' nut by maintenance personnel. Contributing to the incident were the loose pressure oil line 'B' nut and separation of the propeller from the aircraft.
Event Information
| Type of Event | Incident |
| Event Date | 2/20/1999 |
| Event Day of the Week | Saturday |
| Time of Event | 1045 |
| Event Time Zone | Central Standard Time |
| Event City | TINLEY PARK |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | 60477 |
| Event Date Year | 1999 |
| Event Date Month | 2 |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1053 Central Standard Time |
| Direction of event from weather observation facility (degrees) | 20 |
| Weather Observation Facility ID | MDW |
| Elevation of weather observation facility | 620 |
| Distance of event from weather observation facility (units?) | 13 |
| Time Zone of the weather observation | CST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 1800 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 4 |
| Air Temperature at event time (in degrees celsius) | -2 |
| Dew Point at event time (in degress fahrenheit) | -4 |
| Wind Direction (degrees magnetic) | 350 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| 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 | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5004 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Feb 20 1999 12:00AM |
| NTSB Notification Time | 1120 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Jan 10 2001 9:49AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7687U |
| NTSB Number | CHI99IA096 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | T210R |
| Aircraft Series Identifier | T210R |
| Aircraft Serial Number | 21064977 |
| Certified Max Gross Weight | 3800 |
| 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 | 6 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Mar 9 1998 12:00AM |
| Airframe hours since last inspection | 288 |
| Airframe Hours | 4097 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | ILLINOIS DEPT OF CORRECTIONS |
| Aircraft Owner Street Address | 1301 CONCORDIA COURT |
| Aircraft Owner City | SPRINGFIELD |
| Aircraft Owner State | IL |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 62702 |
| 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 | No |
| Departure Point Same as Event | No |
| Departure Airport Code | SPI |
| Departure City | SPRINGFIELD |
| Departure State | IL |
| Departure Country | |
| Departure Time | 945 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | CGX |
| Destination City | 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 10 2001 12:26PM |
| 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 | -- |