What was found
MDIS 303 33-50 5599 21JUL19 JFK OPEN U ON PRE-FLIGHT CHKS "EMER LT BAT 1 LO" DISPLAYED DURING EMERGENCY LIGHT TEST. MEL 21JUL19 10:27 JFK U RELEASED FOR SERVICE PER MEL : 33-50-02 CATEGORY : C EXPIRATION : 31JUL19 "MEL 33-50-02: EMER LIGHTS - INOP." PART 21JUL19 10:51 MC1 U IDENTIFIED PARTS EMERG EXIT LIGHTS MPN: 60-4411-5 CPN: 3300197 QTY: 1 FACT 22JUL19 05:00 PDX REPLACED EMERGENCY LIGHTING BATTERY POWER SUPPLY IAW AMM 33-51-01-4. OPS CHECK GOOD. SDR PARTS INFO: MANUFACTURER P/N 60-4411-5, S/N OFF 0016, S/N ON 0402.