 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B777 flight crew reports being dispatched with one fire loop on the right engine deferred. During taxi out the EICAS annunciates the failure of the second loop followed shortly by fire warning. Although thought to be false; both fire bottles are discharged and the aircraft is eventually towed to the gate.
| Attributes | |
| ACN | 1059090 |
| Time | |
| Date | 201301 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Fire/Overheat Warning |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 210 Flight Crew Total 12000 Flight Crew Type 3000 |
| Person 2 | |
| Function | Relief Pilot Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 16300 Flight Crew Type 7000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Dispatched with fire loop 1 engine right and overheat circuit R1 deferred. On taxi out; we got EICAS 'det fire right engine' with a status message that read 'overheat circuit R2 and fire loop 2 engine right'. After talking to ground about our issue they directed us to the holding pad. On our way there; we decided to shut down the right engine since it appeared that we had no fire detection on that engine. As I'm about to reach down to go to cut off; the fire warning sounded along with all the lights associated with engine fire right (we also got the EICAS). We proceeded to do the checklist and advised ATC to 'roll the equipment'. The fire bell and lights were intermittent but we went ahead and fired both bottles. The relief first officer went back to the cabin and along with the fire department confirmed that there was no fire. We were towed back to the gate; along the way the fire bell went off intermittently. The fire lights on the fire handle and the engine cut off switch never did go off. When maintenance came to the cockpit the fire lights were still on.
Original NASA ASRS Text
Title: B777 flight crew reports being dispatched with one fire loop on the right engine deferred. During taxi out the EICAS annunciates the failure of the second loop followed shortly by fire warning. Although thought to be false; both fire bottles are discharged and the aircraft is eventually towed to the gate.
Narrative: Dispatched with fire loop 1 ENG R and overheat circuit R1 deferred. On taxi out; we got EICAS 'Det Fire Right Engine' with a status message that read 'overheat circuit R2 and fire loop 2 ENG R'. After talking to ground about our issue they directed us to the holding pad. On our way there; we decided to shut down the right engine since it appeared that we had no fire detection on that engine. As I'm about to reach down to go to cut off; the fire warning sounded along with all the lights associated with Engine fire right (we also got the EICAS). We proceeded to do the checklist and advised ATC to 'roll the equipment'. The fire bell and lights were intermittent but we went ahead and fired both bottles. The relief First Officer went back to the cabin and along with the fire department confirmed that there was no fire. We were towed back to the gate; along the way the fire bell went off intermittently. The fire lights on the fire handle and the engine cut off switch never did go off. When Maintenance came to the cockpit the fire lights were still on.
Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.