What was found
ENG 1 OVHT PERFORMED ENGINE/APU CONTROL BITE NO FAULTS REF. AMM 26-10 TASK APPLIED PNEUMATICS FROM APU TO #1 ENG REF 801. AMM36-00-00-860-803,FOUND BAD LEAK AT HIGH STAGE VALVE SHAFT SEAL. BORROWED PART FROM SOUTHWEST AIRLINE TAG IN LOG BOOK ROTABLE PARTS CHANGE WAS INDICATED - TT # 1623300 SN OFF 6852 R/R HPV P/N 3214446-4 ,M&E 33-3612-4-0005. WORK PERFORMED IAW ACP POWER ASSURANCE CHECK REF AMM 71-00-00-700-813-F00 @ 65% N1, AMM TASK 36-11-06-000-801, 36 11-06-400-807 , PERFORMED INSTALL AND 75% N1. CHECKS OK. NO OVERHEAT INDICATION. TEST OPTION 2. NO LEAKS FOUND .PLACED A/C BACK INTO USUAL ADD EMP:U015521 CONDITION. VALVE, HIGH STA OFF 29-3611-9-0002 6852 ON 29-3611-9-0002 9607, OPS/ LEK CHK GOOD,PLACARD REMOVED. PARTS USED: 1534691,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1534691 SN OFF 9607 VALVE, HIGH STA OFF 29-3611-9-0002 9607 ON 29-3611-9-0002 3912