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Air carrier widebody transport had electronics comp overheat followed by smoke in the cabin. Checklist procedure used to eliminate and evacuate smoke. Return dump fuel and land.
| Attributes | |
| ACN | 145173 |
| Time | |
| Date | 199005 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : las |
| State Reference | NV |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla tower : jfk |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 200 flight time total : 14000 flight time type : 3500 |
| ASRS Report | 145173 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 225 flight time total : 8000 flight time type : 750 |
| ASRS Report | 145442 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other other : unspecified |
| Resolutory Action | flight crew : declared emergency flight crew : overcame equipment problem |
| Consequence | faa : investigated Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Near the beginning of cruise, a duct/avionics compartment over heat light illuminated. Accomplished abnormal procedure for same and trim air inoperative. With no out of the ordinary indications in the air condition or pneumatic system', we received a call from a F/a that zone C was filling full of smoke. We initiated emergency air conditioning smoke procedure and returned to lax. Smoke was fully removed from cabin in 3 or 4 mins and had no reoccurrence. Dumped 30000 pounds of fuel to maximum gross landing weight.
Original NASA ASRS Text
Title: ACR WDB HAD ELECTRONICS COMP OVERHEAT FOLLOWED BY SMOKE IN THE CABIN. CHKLIST PROC USED TO ELIMINATE AND EVACUATE SMOKE. RETURN DUMP FUEL AND LAND.
Narrative: NEAR THE BEGINNING OF CRUISE, A DUCT/AVIONICS COMPARTMENT OVER HEAT LIGHT ILLUMINATED. ACCOMPLISHED ABNORMAL PROC FOR SAME AND TRIM AIR INOPERATIVE. WITH NO OUT OF THE ORDINARY INDICATIONS IN THE AIR CONDITION OR PNEUMATIC SYS', WE RECEIVED A CALL FROM A F/A THAT ZONE C WAS FILLING FULL OF SMOKE. WE INITIATED EMER AIR CONDITIONING SMOKE PROC AND RETURNED TO LAX. SMOKE WAS FULLY REMOVED FROM CABIN IN 3 OR 4 MINS AND HAD NO REOCCURRENCE. DUMPED 30000 LBS OF FUEL TO MAX GROSS LNDG WT.
Data retrieved from NASA's ASRS site as of July 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.