Service difficulty report · Check Valve · Boeing 757224

Difficulty date
January 18, 2020
Submitted
January 20, 2020
Operation
Air carrier
Aircraft
N18112
Make and model
Boeing 757224
Aircraft serial
27302
Aircraft time
95,091 hours, 22,559 cycles
Engine
Rroyce RB211535E4
Part
Check Valve
Part number
32021541
Condition
Failed
Location
Rt Engine
Stage of operation
CL
How discovered
O
Nature of condition
E, R
Precautionary procedure
A

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

What was found

RIGHT ENGINE COMPRESSOR STALL CLIMBING THROUGH 1000 FEET ON DEPA RTURE. RIGHT ENGINE ITT 900. COMPRESSOR STALLED CONSECUTIVELY FOUR TIMES (PER PAX VIDEO). CREW REPORTED ENGINE REMAINED AT IDLE POWER THE REMAINER OF THE FLIGHT(NEVER SHUTDOWN). ENG EXCD PAGE SHOWS EGT 900 :06 SECONDS. PERFORMED BITE ON THE TPU IRW FIM 75-32 TASK 815-831-R04, GOT FAULT CODE 40 INDICATING AN ENGINE SURGE. NO OTHER FAULTS NOTED ON TPU. ALSO PERFORMED BITE ON BVCU 75-32 TASK 815-830-R04, GOT FAULT CODE 04 MEANING PLA O/C EXCITATION OR PLA O/C OUTPUT. THIS FAULT ALSO INDICATES AN ENGINE SURGE. NO OTHER FAULTS NOTED ON BVCU. PERFORMED NO FINDINGS OBSERVED. INSPECTION OF #2 ENGINE INLET COWL AND EXHAUST NOZZLE PERFORMED FIM 71-05-00-815-819-R00 UP TO BLOCK 23. UP TO NR 3 COMPRESSOR AIRFLOW CONTROL TEST, AND NR 13 TAKE OFF POWER TEST. PERFORMED TEST NR 3 REF M/M 71-00-00-715-049-R03 AND TEST NR 13 REF MM 71-00-00-715-223-R03. NO DEFECTS NOTED AND ALL PARAMETERS NORMAL. CHANGED IP CHECK VALVE PER ESC REQUEST. ALL ENGINE RUNS AND TEST WERE SATIFACTORY.NO FURTHER ACTION REQUIRED.