What was found
FLT 109 - TIJ-MEX - AIRCRAFT ARRIVED WITH CAPTAIN REPORT 'BREAKER S-27 OF LEFT HYDRAULIC ENGINE PUMP WAS OUT OF SERVICE'. DURING REVISION WAS DETECTED WIRING OF LAMP BETWEEN BACK CABIN AND RESTROOMS GROUNDED. THE WIRING WAS REPAIRED IAW WDM 29-11-02, ALL TESTS CORRECT. DURING OVERNIGHT SERVICE LINES AD3D18 OF PLUG RE-1223 PIN K, F948A18 OF PLUG R5-1223 PIN M AND 2J3D18 OF PLUG R5-1224 PIN R WERE COVERED WITH THERFIT IAW WDM 29-11-02, 30-31-01 AND 74-11-00, ALL CORRECT. (M)