Service difficulty report · Engine · Boeing 7377H4

Difficulty date
May 17, 2025
Submitted
May 20, 2025
Operation
Air carrier
Aircraft
N480WN
Make and model
Boeing 7377H4
Aircraft serial
33998
Aircraft time
69,222 hours, 41,220 cycles
Engine
Cfmint CFM567B242
Part
Engine
Condition
Power Loss
Location
Nr 2
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

ON TAKEOFF; BOTH THROTTLES AND N1S CAME UP TO OVER 40%. #1 N1 CAME RIGHT UP TO 95.8%; #2 STAYED BACK AT JUST OVER 40%. BOTH THROTTLES CAME UP TO NORMAL POSITION<[01] PERFORMED INSPECTION OF #2 ENGINE FUEL PUMP IMPELLER IAW AMM 73-11-01. NO DEFECTS NOTED AT THIS TIME. PERFORMED INSPECTION OF PS3 LINE RUNNING FROM #2 ENGINE EEC TO HPC PORT PER ENGINEERING REQUEST. NO DAMAGE OR BLOCKAGE NOTED TO PS3 LINE ALONG THE ENTIRETY OF THE LINE.;[02] REF FIM 73-05 TASK 814. CW EEC BITE PROCEDURE; NO FAULTS FOUND. CW STEPS E(5)-(7) NO ERRATIC SIGNALS NOTED. PER ENGINEERING REQUEST COMPLY WITH TEST 8-ACCELERATION CHECK AMM 71-00-00-700-824-F00;[03] REFERENCE TASK ID: TTG8Q010KDVR FOR PREVIOUS WORK PERFORMED. ACCOMPLISHED TEST 8?ACCELLERATION TEST PER M/M 71-00-00. OPS CHECKS OK.

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