Individually Owned: 150,657
Corporate Owned: 137,281
Tallahassee Regional Airport
Aircraft Accident/Incident Report
Tallahassee, Florida 32310
Saturday, February 28, 2009 8:40 EST
NTSB Narrative Summary Released at Completion of Accident
A fire initiated in the top portion of the JB-1 junction box, which contains components associated with the distribution of electrical power from the APU or an external AC power supply. The fire ignited combustible materials, including insulation blankets and spread upwards toward a flexible oxygen line mounted above the JB-1 junction box. The flexible oxygen line ignited when exposed to the fire, and the fire burned through the aircraft's fuselage.
Evidence suggests that the fire initiated as a result of an electrical anomaly in the top portion of the JB-1 junction box, near bus bar and contactor components. This evidence includes melting of one side of the bus bar along the periphery of its connection to a terminal stud and severe thermal damage to the internal and, to a lesser degree, external surfaces of the K1XB contactor case. Despite the damage to the contactor case, the internal contacts did not appear to be stuck or exhibit signs of melting or excessive pitting. There were no other signs of arcing near any of these components.
Numerous maintenance difficulties had occurred on the aircraft involving the external AC power supply system beginning approximately 10-weeks before the accident. To attempt to remedy the anomalies, several relays, electrical contactors, the AC power switch, the external ground power receptacle, and other electrical components were removed and replaced with new components. Several of these components were located in the upper section of the JB-1 junction box. The last of these actions occurred about 5-weeks before the accident.
NTSB Probable Cause Narrative
An electrical anomaly in the top portion of the JB-1 junction box resulting in ignition of adjacent combustible materials, including insulation blankets, and a flexible oxygen line.
Event Information
| Type of Event | Accident |
| Event Date | 2/28/2009 |
| Event Day of the Week | Saturday |
| Time of Event | 840 |
| Event Time Zone | Eastern Standard Time |
| Event City | Tallahassee |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 32310 |
| Event Date Year | 2009 |
| Event Date Month | 2 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 302347N |
| Event Location Longitude | 0842101W |
| Event Location Airport | Tallahassee Regional Airport |
| Event Location Nearest Airport ID | TLH |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Unknown |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| Lighting Conditions | -- |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | -- |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | -- |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| 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) | -- |
| NTSB Notification Source | NTSB Regional Office |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Sep 29 2011 8:51AM |
| User who most recently changed record | benr |
| Basic weather conditions | -- |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N830AS |
| NTSB Number | DCA09FA033 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BOMBARDIER |
| Aircraft Model | CRJ |
| Aircraft Series Identifier | 200 |
| Aircraft Serial Number | 7236 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | 2 |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | -- |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Feb 27 2009 12:00AM |
| Airframe hours since last inspection | 7 |
| Airframe Hours | 26384 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | Atlantic Southeast Airlines, Inc. |
| Aircraft Owner Street Address | A-Tech, 990 Toffie Terrace |
| Aircraft Owner City | Atlanta |
| Aircraft Owner State | GA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 30354 |
| Operator is an individual? | No |
| Operator Name | Atlantic Southeast Airlines, Inc. |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | A-Tech, 990 Toffie Terrace |
| Operator City | Atlanta |
| Operator State | GA |
| Operator Country | USA |
| Operator Zip code | 30354 |
| Operator Code | ASOA |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | ASOA029B |
| 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) | -- |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | TLH |
| Departure City | Tallahassee |
| Departure State | FL |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | EST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ATL |
| Destination City | Atlanta |
| Destination State | GA |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Nov 1 2010 2:51PM |
| User who most recently changed record | benr |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |