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The flight crew of a B727; after receiving main deck cargo compartment fire warnings on final approach; elected to land and evacuate on the runway rather than initiate the associated emergency procedure during a critical phase of flight. A subsequent inspection determined the event to have been triggered by a faulty fire sensor.
| Attributes | |
| ACN | 975012 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Cargo Compartment Fire/Overheat Warning |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 15 Flight Crew Total 8000 Flight Crew Type 2500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
The main deck cargo #4 fire detector illuminated with the associated fire bell. The aircraft was fully configured and we were completing the before landing checklist. We elected to continue to land; stop on the runway and initiate an emergency evacuation of aircraft through the cockpit windows. We did not don O2 masks or run the main cargo fire checklist due to time to land being less than one minute; no smell or smoke in cockpit and the fact we were in critical phase of flight. We completed the emergency evacuation checklist and all three crew members evacuated without injuries.the subsequent maintenance evaluation of the aircraft determined the cause to have been a false fire indication due to a bad sensor. Our crew CRM was exceptional due to the airline's training program.
Original NASA ASRS Text
Title: The flight crew of a B727; after receiving main deck cargo compartment fire warnings on final approach; elected to land and evacuate on the runway rather than initiate the associated emergency procedure during a critical phase of flight. A subsequent inspection determined the event to have been triggered by a faulty fire sensor.
Narrative: The Main Deck Cargo #4 Fire detector illuminated with the associated fire bell. The aircraft was fully configured and we were completing the Before Landing Checklist. We elected to continue to land; stop on the runway and initiate an Emergency Evacuation of aircraft through the cockpit windows. We did not don O2 masks or run the Main Cargo Fire checklist due to time to land being less than one minute; no smell or smoke in cockpit and the fact we were in critical phase of flight. We completed the emergency evacuation checklist and all three crew members evacuated without injuries.The subsequent maintenance evaluation of the aircraft determined the cause to have been a false fire indication due to a bad sensor. Our crew CRM was exceptional due to the airline's training program.
Data retrieved from NASA's ASRS site as of April 2012 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.