Narrative:

I received a turnover from the night shift from aircraft X. The crew had sent a report on a maintenance item concerning the first officer's system annunciator lights, commonly known as the 'six pack.' at the time of the turnover I was told by the mechanic that he had determined that the annunciator light assembly would need to be replaced, but there isn't any removal and replacement procedures in the maintenance manual. He further stated that he had contacted technical service and was given the guidance, 'just install it.' I called my manager and asked that he contact whomever to get a procedure to accomplish the replacement and any operations check required. Shortly he was in contact with the technical pubs who referred him to gpm 2-01 paragraph C2. I believed that the guidance was still not proper for the replacement of this assembly and requested further instructions. We were then directed to use the procedure in maintenance manual 33-18-00-02, master dim and test lights, maintenance practices. The section is a generic description for removing and replacing of various lights, modules, and assemblies. There isn't any specific removal and replacement for the system annunciator light assembly, nor a task specific installation test other than the light test for the cockpit. The system annunciator lights have 2 locations in the flight deck, one for each pilot, and the annunciations displayed are different for each pilot. These lights annunciate critical dispatch items, and there have been many ground interrupts because of a light coming on after gate departure. Is the generic light test the proper test after replacement of the light assembly? Should there be a task specific removal and replacement for this assembly? Also, when the field contacts technical service on issues such as this item, the guidance should be something other than just install it, or citing a section of the gpm.

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Original NASA ASRS Text

Title: A B737-800 LEAD TECHNICIAN RPTS DIFFICULTY FINDING A PROC FOR REPLACEMENT AND TEST OF THE R MASTER CAUTION ANNUNCIATOR LIGHT ASSEMBLY.

Narrative: I RECEIVED A TURNOVER FROM THE NIGHT SHIFT FROM ACFT X. THE CREW HAD SENT A RPT ON A MAINT ITEM CONCERNING THE FO'S SYS ANNUNCIATOR LIGHTS, COMMONLY KNOWN AS THE 'SIX PACK.' AT THE TIME OF THE TURNOVER I WAS TOLD BY THE MECH THAT HE HAD DETERMINED THAT THE ANNUNCIATOR LIGHT ASSEMBLY WOULD NEED TO BE REPLACED, BUT THERE ISN'T ANY REMOVAL AND REPLACEMENT PROCS IN THE MAINT MANUAL. HE FURTHER STATED THAT HE HAD CONTACTED TECHNICAL SVC AND WAS GIVEN THE GUIDANCE, 'JUST INSTALL IT.' I CALLED MY MGR AND ASKED THAT HE CONTACT WHOMEVER TO GET A PROC TO ACCOMPLISH THE REPLACEMENT AND ANY OPS CHK REQUIRED. SHORTLY HE WAS IN CONTACT WITH THE TECHNICAL PUBS WHO REFERRED HIM TO GPM 2-01 PARAGRAPH C2. I BELIEVED THAT THE GUIDANCE WAS STILL NOT PROPER FOR THE REPLACEMENT OF THIS ASSEMBLY AND REQUESTED FURTHER INSTRUCTIONS. WE WERE THEN DIRECTED TO USE THE PROC IN MAINT MANUAL 33-18-00-02, MASTER DIM AND TEST LIGHTS, MAINT PRACTICES. THE SECTION IS A GENERIC DESCRIPTION FOR REMOVING AND REPLACING OF VARIOUS LIGHTS, MODULES, AND ASSEMBLIES. THERE ISN'T ANY SPECIFIC REMOVAL AND REPLACEMENT FOR THE SYS ANNUNCIATOR LIGHT ASSEMBLY, NOR A TASK SPECIFIC INSTALLATION TEST OTHER THAN THE LIGHT TEST FOR THE COCKPIT. THE SYS ANNUNCIATOR LIGHTS HAVE 2 LOCATIONS IN THE FLT DECK, ONE FOR EACH PLT, AND THE ANNUNCIATIONS DISPLAYED ARE DIFFERENT FOR EACH PLT. THESE LIGHTS ANNUNCIATE CRITICAL DISPATCH ITEMS, AND THERE HAVE BEEN MANY GND INTERRUPTS BECAUSE OF A LIGHT COMING ON AFTER GATE DEP. IS THE GENERIC LIGHT TEST THE PROPER TEST AFTER REPLACEMENT OF THE LIGHT ASSEMBLY? SHOULD THERE BE A TASK SPECIFIC REMOVAL AND REPLACEMENT FOR THIS ASSEMBLY? ALSO, WHEN THE FIELD CONTACTS TECHNICAL SVC ON ISSUES SUCH AS THIS ITEM, THE GUIDANCE SHOULD BE SOMETHING OTHER THAN JUST INSTALL IT, OR CITING A SECTION OF THE GPM.

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.