Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Champaign, Illinois 61821
Friday, August 18, 1995 13:48 CDT
NTSB Narrative Summary Released at Completion of Accident
The airplane sustained minor damage following an uncontained failure of the number two engine during approach. The crew received a fire indication of the number two engine. They secured the engine and discharged the nacelle fire extinguishing system. They landed and evacuated the airplane without further incident. Examination revealed several penetrations of the right fuselage side and number two cowling. The gearbox housing had a hole at the 12 o'clock position in the plane of rotation of the helical drive (bull) gear. The combustion plenum had a hole at the five o'clock position. Fragments of the bull gear were recovered from within the gear box. Metallurgical examination of the bull gear revealed a fatigue crack that emanated from the root radius of a gear tooth. The crack progressed to an area of the fracture that contained 'features typical of overstress separation.' The hole in the combustion plenum was attributed to excessive temperature. No other metallurgical anomaly was noted.
NTSB Probable Cause Narrative
fatigue cracking and subsequent catastrophic failure of the number two engine helical drive (bull) gear, which resulted in an overtemperature condition, bursting of the combustion plenum, and a subsequent in-flight fire.
Event Information
| Type of Event | Incident |
| Event Date | 8/18/1995 |
| Event Day of the Week | Friday |
| Time of Event | 1348 |
| Event Time Zone | Central Daylight Time |
| Event City | CHAMPAIGN |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | 61821 |
| Event Date Year | 1995 |
| Event Date Month | 8 |
| 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 | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1348 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 45 |
| Weather Observation Facility ID | CMI |
| Elevation of weather observation facility | 754 |
| Distance of event from weather observation facility (units?) | 6 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 3700 |
| 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) | 15 |
| Air Temperature at event time (in degrees celsius) | 34 |
| Dew Point at event time (in degress fahrenheit) | 24 |
| Wind Direction (degrees magnetic) | 290 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| 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 | 18 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5050 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Aug 18 1995 12:00AM |
| NTSB Notification Time | 1500 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 7 2000 4:29PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N425AM |
| NTSB Number | CHI95IA286 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Minor |
| Aircraft Fire | In-flight |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | British Aerospace |
| Aircraft Model | BAE JETSTREAM 3201 |
| Aircraft Series Identifier | BAE JETSTR |
| Aircraft Serial Number | 870 |
| Certified Max Gross Weight | 15000 |
| 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 | 21 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Aug 14 1995 12:00AM |
| Airframe hours since last inspection | 11 |
| Airframe Hours | 9777 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | FIRST SEC. BANK OF UTAH TRUST |
| Aircraft Owner Street Address | 79 S. MAIN STREET |
| Aircraft Owner City | SALT LAKE CITY |
| Aircraft Owner State | UT |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 84111 |
| Operator is an individual? | -- |
| Operator Name | TRANS STATE AIRLINES |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 9275 GENAIRE DRIVE |
| Operator City | ST LOUIS |
| Operator State | MO |
| Operator Country | |
| Operator Zip code | 63134 |
| Operator Code | RAIA |
| 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 | Scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | STL |
| Departure City | ST LOUIS |
| Departure State | MO |
| Departure Country | |
| Departure Time | 1310 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | CMI |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Approach |
| 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 | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |