Service difficulty report · Valve · Boeing 757200

Difficulty date
June 30, 2023
Submitted
July 3, 2023
Operation
Air carrier
Aircraft
N67134
Make and model
Boeing 757200
Aircraft serial
29283
Aircraft time
89,140 hours, 19,215 cycles
Part
Valve
Part number
32143044
Part serial
924
Condition
Leaking
Location
Eng#1
Part time
93,142 hours, 22,419 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

IN FLIGHT AFTER TAKEOFF LEFT ENG OVHT WARNING TEST. TEST GOOD. LOCKING PG - MX TO CONTACT TOMC TO CLEAR FOUND NUMBER ONE ENGINE, INBOARD THRUST REVERSER, HYDRAULIC, HIGH ENGINE POWER RUN PERFORMED BY (R. BLASCHKE #093935) FAULT FLEXIBLE LINE. CHAFING ON NUMBER THREE FIRE DETECTION ELEMENT. NOTED WAS "L ENG OH LP2". REQUIRES MORE TROUBLESHOOTING. ADJUSTED FLEXIBLE LINE. NOW HAS SUFFICIENT CLEARANCE. FOUND NUMBER THREE FIRE DETECTION ELEMENT OK. PREFORMED ENGINE FIRE, UNLOCKED FOR MAINTENANCE TO CLEAR. REMOVED AND REPLACED M10276 LOOP 2 OVERHEAT CARD REF AWM PARTS UPDATED 26-11-03-101. PRESSURED UPSTREAM TO PSROV REF AMM 36-11-09-782-030-001. FOUND HIGH STAGE VAVLE LEAKING. REMOVED AND REPLACED #1 ENG NACELLE FIRE LOOP IAW AMM OVERHEAT WARNINGS DURING ENTIRE ENGINE RUN. 26-11-01-400/000-801. PERFORMED FIRE LOOP TEST IAW AMM 31-51-00. OPS CHECK GOOD. PARTS USED: 1087333,QTY :1 ADD EMP:U ROTABLE PARTS CHANGE WAS INDICATED - TT # 1087333 SN OFF 0134 RAN #1 ENG AT 1.54 EPR AND 90% N1 FOR TWO MINUTES AND NO OVERHEAT WARNINGS WERE INDICATED. ALSO COMPLETED BLEED SHIFT TEST TO FIND OUT BLEED SHIFT POINT AND RAN ENGINE FOR THREE MINUTES WITH HIGH STAGE AIR JUST BEFORE BLEED SHIFT. NO ADD EMP:U104298 DETECTOR, NACEL OFF 19-2611-9-9001 0134 ON 19-2611-9-9001 0480 UPDATED PART TRANSACTION FOR CARD ME 75-2611-9-9001. SN ON 8624. SN OFF 13542 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1514397 SN OFF 3542 IPC REFERENCE # 26-11-52-01B . REF LOG PAGES 5039164 5035159 5027914. REMOVED &

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