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Air carrier widebody transport loose electrical wire caused short resulting in overheated probe and giving false fire indication.
| Attributes | |
| ACN | 84805 |
| Time | |
| Date | 198803 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : box airport : bos |
| State Reference | MA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 14000 flight time type : 5000 |
| ASRS Report | 84805 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
We had an indication of a pneumatic fire on the ground in boston. It turned out to be an electrical fire that had heated up the pneumatic overheat probe. Believed to have been caused by a loose ground wire on the battery. Compartment overheat light never did come on.
Original NASA ASRS Text
Title: ACR WDB LOOSE ELECTRICAL WIRE CAUSED SHORT RESULTING IN OVERHEATED PROBE AND GIVING FALSE FIRE INDICATION.
Narrative: WE HAD AN INDICATION OF A PNEUMATIC FIRE ON THE GND IN BOSTON. IT TURNED OUT TO BE AN ELECTRICAL FIRE THAT HAD HEATED UP THE PNEUMATIC OVERHEAT PROBE. BELIEVED TO HAVE BEEN CAUSED BY A LOOSE GND WIRE ON THE BATTERY. COMPARTMENT OVERHEAT LIGHT NEVER DID COME ON.
Data retrieved from NASA's ASRS site as of August 2007 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.