What was found
(CAN) NAVIGATION LIGHT ASSEMBLY (TAIL) APPEARS TO HAVE PROBLEMS WITH THE TOP BULB BURNING OUT. THERE HAS BEEN 8 BULBS P/N 972.87.87.184 REPLACED WITHIN 7 DAYS. THE COMPLETE ASSEMBLY HAS BEEN REPLACED ALONG WITH A ELECTRONIC SWITCH UNIT. THE SAME RESULTS. THE BULBS THEMSELVES ARE EXTREMELY HOT WITHIN A SORT TIME OF OPERATION.(SECONDS) THIS NAV LIGHT ASSEMBLY IS PART OF A KIT P/N 500.50.12.276 DUAL NAV LIGHT SYSTEM. MFG S/B 33-009 WAS USED FOR THE INSTALLATION OF THIS PRODUCT. IN SHORT, THE LIGHT IS UNRELIABLE. ON GOING TRIALS ARE CONTINUING TO FIND A SOLUTION.