# Incident 20111023027779I: Bombardier Inc CL-600-2C10, Atlanta, GA, October 23, 2011

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: October 23, 2011, 14:15 local time
- Place: Atlanta, GA
- Airport: Hartsfield Jackson Atlanta Int
- Damage: Minor damage
- Phase of flight: Taxi
- Operating rules: Air carrier (Part 121)
- Operator: ASOA
- Location: 33.7507° N, 84.3898° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=33.7507&lon=-84.3898&mi=10
- Aircraft: N751EV, registered now (https://openairdocs.org/aircraft/N751EV) (OpenAirDocs)
- Registry model: Bombardier CL-600-2C11 (registry code 1390021, https://openairdocs.org/model/bombardier-cl-600-2c11) (OpenAirDocs)
- Registry engine: GE CF34 series (registry code 30015, https://openairdocs.org/engine/ge-cf34-series) (OpenAirDocs)
- Reported make and model: BOMBARDIER INC CL-600-2C10
- Reported engine: GE CF34 SERIES
- People aboard: 69
- Fatal injuries: 0
- Other injuries: 0
- NTSB investigation: [NTSB ENG12IA004](https://openairdocs.org/ntsb/ENG12IA004) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20111023027779I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON SUNDAY, OCTOBER 23, 2001, ATLANTIC SOUTHEAST AIRLINES (ASA) FLIGHT 5131, OPERATING FROM DES MOINES, IA (DSM) TO ATLANTA, GA (ATL), USING BOMBARDIER CRJ-700 AIRCRAFT REGISTRATION N751EV, LANDED IN ATL AT APPROXIMATELY 1415 LOCAL TIME. DURING TAXI AND AFTER SHUTTING DOWN THE LEFT ENGINE, THE FLIGHT CREW OBSERVED A LEFT ENGINE FIRE WARNING. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK PROCEDURE AND EXTINGUISHED THE FIRE. THE AIRCRAFT COMPLETED ITS TAXI TO THE GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL REPLACED THE LEFT ENGINE AND THE AIRCRAFT WAS RETURNED TO SERVICE. THERE WAS NO FIRE DAMAGE TO THE AIRFRAME. DAMAGE WAS LIMITED TO MINOR BURN DAMAGE TO A WIRE HARNESS IN THE VICINITY OF THE OPERABILITY BLEED VALVE (OBV) ON THE UPPER LEFT SIDE OF THE ENGINE. ON MONDAY OCTOBER 24, 2011, AN FAA INSPECTOR FROM THE ASA CERTIFICATE MANAGEMENT UNIT OBSERVED THE ENGINE AND COMMUNICATED WITH THE NTSB IIC. ON TUESDAY OCTOBER 25, 2011, THE OBV WAS REMOVED FROM THE ENGINE AT THE DIRECTION OF THE NTSB IIC AND WITH REPRESENTATIVES FROM THE FAA, ASA, HONEYWELL, AND GENERAL ELECTRIC IN ATTENDANCE. THE VALVE WAS FOUND TO BE INSTALLED APPROXIMATELY ONE EIGHTH INCH OUT OF ALIGNMENT AND ONE OF THE FUEL MUSCLE LINES TO THE VALVE BODY WAS FRACTURED AND SEPARATED FROM THE OBV ALLOWING FUEL TO LEAK AND FEED THE FIRE. THE VALVE AND ATTACHING HARDWARE WAS SENT TO HONEYWELL IN ARIZONA FOR EXAMINATION. ON NOVEMBER 15, 2011, THE OBV WAS EXAMINED AND THE FRACTURED MUSCLE LINE ATTACHMENT FITTING WAS DETERMINED TO HAVE BEEN CRACKED PRIOR TO THE FAILURE.  THERE HAVE BEEN A NUMBER OF SIMILAR FAILURES AND HONEYWELL IS WORKING WITH THE NTSB TO IDENTIFY A PROBABLE ROOT CAUSE. AT THIS TIME, THE NTSB HAS CUSTODY OF THE RELEVANT PARTS AND THE INVESTIGATION.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ENG12IA004](https://openairdocs.org/ntsb/ENG12IA004), Oct 23, 2011: Bombardier CL600 2C10 (N751EV), Atlanta, GA, incident, no damage. Probable cause: The Start Operability Bleed Valve (OBV) fuel return adapter-fitting fractured and separated in cyclic fatigue, which allowed fuel to spill onto a hot engine case that ignited the undercowl fire. The…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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