Narrative:

I was assigned to aircraft X. There were several mechanics tending to maintenance issues onboard. After setting up the flight deck for a domestic (sfo) departure, I looked into a lighting issue. Avionics doesn't re-lamp per southeast, but we have been known to do so. I became aware of an exterior emergency lighting issue and followed up. My follow-up consisted of activating the lighting system from the flight deck for evaluation. As I walked through the cabin, no lighting discrepancies were noted. I turned the circuit off, and back on. With the circuit activated, I walked around the aircraft. I noticed no exterior lighting discrepancies. I walked back around, this time in a clockwise pattern. Back in the cockpit, I switched off the emergency lighting circuit to avoid inducing a battery pack problem. I left the circuit off for a few mins. I cycled the emergency lighting circuit on and went back outside, and again did a walkaround inspection from the ground. Having completed my walkaround, I returned to the flight deck and switched off the circuit. Having completed 2 visual inspections, no discrepancies existed. By cycling the switch on/off 2 cycles, either the battery pack connection(south) or lamp contact connection improved. All exterior assemblies were illuminated and none were flickering. I was aware the system had previous history. As I found no discrepancies with regard to emergency lighting, it is my duty to sign off with action taken on the item as related to maintenance entry #75. This is a tricky system, as lamps are known to illuminate and then not, intermittently. I feel that if someone saw this lamp assembly on aircraft X had gone inoperative before departure, it was their duty to open another item in the maintenance log. Any open item would have been addressed prior to departure. I was not recalled to aircraft X that evening, nor am I aware of any further items related to this system prior to departure. I did not call maintenance control for a follow-up as I saw the aircraft terminated in ZZZ for a heavy maintenance check.

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Original NASA ASRS Text

Title: A B767-300 TECHNICIAN WORKED AN EXTERIOR EMER LIGHT RPT AND AFTER 2 TESTS OF THE SYS SIGNED THE RPT AS TESTED OK, NO FAULT FOUND.

Narrative: I WAS ASSIGNED TO ACFT X. THERE WERE SEVERAL MECHS TENDING TO MAINT ISSUES ONBOARD. AFTER SETTING UP THE FLT DECK FOR A DOMESTIC (SFO) DEP, I LOOKED INTO A LIGHTING ISSUE. AVIONICS DOESN'T RE-LAMP PER SE, BUT WE HAVE BEEN KNOWN TO DO SO. I BECAME AWARE OF AN EXTERIOR EMER LIGHTING ISSUE AND FOLLOWED UP. MY FOLLOW-UP CONSISTED OF ACTIVATING THE LIGHTING SYS FROM THE FLT DECK FOR EVALUATION. AS I WALKED THROUGH THE CABIN, NO LIGHTING DISCREPANCIES WERE NOTED. I TURNED THE CIRCUIT OFF, AND BACK ON. WITH THE CIRCUIT ACTIVATED, I WALKED AROUND THE ACFT. I NOTICED NO EXTERIOR LIGHTING DISCREPANCIES. I WALKED BACK AROUND, THIS TIME IN A CLOCKWISE PATTERN. BACK IN THE COCKPIT, I SWITCHED OFF THE EMER LIGHTING CIRCUIT TO AVOID INDUCING A BATTERY PACK PROB. I LEFT THE CIRCUIT OFF FOR A FEW MINS. I CYCLED THE EMER LIGHTING CIRCUIT ON AND WENT BACK OUTSIDE, AND AGAIN DID A WALKAROUND INSPECTION FROM THE GND. HAVING COMPLETED MY WALKAROUND, I RETURNED TO THE FLT DECK AND SWITCHED OFF THE CIRCUIT. HAVING COMPLETED 2 VISUAL INSPECTIONS, NO DISCREPANCIES EXISTED. BY CYCLING THE SWITCH ON/OFF 2 CYCLES, EITHER THE BATTERY PACK CONNECTION(S) OR LAMP CONTACT CONNECTION IMPROVED. ALL EXTERIOR ASSEMBLIES WERE ILLUMINATED AND NONE WERE FLICKERING. I WAS AWARE THE SYS HAD PREVIOUS HISTORY. AS I FOUND NO DISCREPANCIES WITH REGARD TO EMER LIGHTING, IT IS MY DUTY TO SIGN OFF WITH ACTION TAKEN ON THE ITEM AS RELATED TO MAINT ENTRY #75. THIS IS A TRICKY SYS, AS LAMPS ARE KNOWN TO ILLUMINATE AND THEN NOT, INTERMITTENTLY. I FEEL THAT IF SOMEONE SAW THIS LAMP ASSEMBLY ON ACFT X HAD GONE INOP BEFORE DEP, IT WAS THEIR DUTY TO OPEN ANOTHER ITEM IN THE MAINT LOG. ANY OPEN ITEM WOULD HAVE BEEN ADDRESSED PRIOR TO DEP. I WAS NOT RECALLED TO ACFT X THAT EVENING, NOR AM I AWARE OF ANY FURTHER ITEMS RELATED TO THIS SYS PRIOR TO DEP. I DID NOT CALL MAINT CTL FOR A FOLLOW-UP AS I SAW THE ACFT TERMINATED IN ZZZ FOR A HVY MAINT CHK.

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.