Narrative:

The #4 aft cargo smoke detector light, cargo fire warning light, #2 engine fire 'a' loop light and master warning lights flashed on and off momentarily 7 times. Maintenance control for our airline was called on HF and they suggested a possible airbleed leak. The engine #2 bleed air was turned off and no further problems were indicated. The aft cargo temperature indicator was about 65 degrees and lowered with a lower temperature selected. Logbook write ups for the days prior indicated a temperature difference in the #2 pneumatic manifold. #2 was 90 degrees and #'south 1 and 3 were at 220 degrees. We tested the circuits during the flashing and after the #2 bleed was closed and they all tested ok. For these reasons I believe our maintenance control people were correct. All emergency and abnormal procedures were reviewed. The lead flight attendant was advised. We continued to hnl with no further problems. In this situation we were able to contact our maintenance control on HF through sfo commercial radio but there are times over the pacific ocean when HF is totally unusable because of the WX. At what point are we going to be able to use satcom for our trans-pacific flts?

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Original NASA ASRS Text

Title: FLC OF A WDB EXPERIENCED A FIRE WARNING IN A CARGO COMPARTMENT WHICH WAS OVERCOME BY COORD WITH COMPANY MAINT AND ACFT CHKLIST PROCS.

Narrative: THE #4 AFT CARGO SMOKE DETECTOR LIGHT, CARGO FIRE WARNING LIGHT, #2 ENG FIRE 'A' LOOP LIGHT AND MASTER WARNING LIGHTS FLASHED ON AND OFF MOMENTARILY 7 TIMES. MAINT CTL FOR OUR AIRLINE WAS CALLED ON HF AND THEY SUGGESTED A POSSIBLE AIRBLEED LEAK. THE ENG #2 BLEED AIR WAS TURNED OFF AND NO FURTHER PROBS WERE INDICATED. THE AFT CARGO TEMP INDICATOR WAS ABOUT 65 DEGS AND LOWERED WITH A LOWER TEMP SELECTED. LOGBOOK WRITE UPS FOR THE DAYS PRIOR INDICATED A TEMP DIFFERENCE IN THE #2 PNEUMATIC MANIFOLD. #2 WAS 90 DEGS AND #'S 1 AND 3 WERE AT 220 DEGS. WE TESTED THE CIRCUITS DURING THE FLASHING AND AFTER THE #2 BLEED WAS CLOSED AND THEY ALL TESTED OK. FOR THESE REASONS I BELIEVE OUR MAINT CTL PEOPLE WERE CORRECT. ALL EMER AND ABNORMAL PROCS WERE REVIEWED. THE LEAD FLT ATTENDANT WAS ADVISED. WE CONTINUED TO HNL WITH NO FURTHER PROBS. IN THIS SIT WE WERE ABLE TO CONTACT OUR MAINT CTL ON HF THROUGH SFO COMMERCIAL RADIO BUT THERE ARE TIMES OVER THE PACIFIC OCEAN WHEN HF IS TOTALLY UNUSABLE BECAUSE OF THE WX. AT WHAT POINT ARE WE GOING TO BE ABLE TO USE SATCOM FOR OUR TRANS-PACIFIC FLTS?

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.