Service difficulty report · Pump · Boeing 777222

Difficulty date
April 18, 2025
Submitted
April 22, 2025
Operation
Air carrier
Aircraft
N791UA
Make and model
Boeing 777222
Aircraft serial
26933
Aircraft time
108,111 hours, 14,518 cycles
Engine
Pwa PW4090
Part
Pump
Part number
72330112
Part serial
CSGCA11263
Condition
Faulted
Location
Nr 2 Engine
Part time
192 hours, 29 cycles
Stage of operation
CR
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

FUEL DISAGREE EICAS IN CRUISE. NO LEAK SUSPECTED. ENG FUEL TUBE FM11 LEAKING AT FUEL FACE SEAL , HELI COIL DAMAGED WHEN REMOVING BOLT. REMOVED #2 ENG FMU REF AMM 73-11-01 ,ALSO REMOVED #2 ENG FUEL PUMP REF AMM 73-11-01. ACCOMPLISHED IDT INSPECTION OF THE INSTALLATION OF FUEL PUMP PER AMM 73-11-01 AND FMU PER AMM 73-21-01 AND GMM 09-10-05 REPLACED #2 ENG FUEL PUMP REF AMM 73-11-01 UPTO STEP 3 G (8), ALSO INSTALLED FMU REF AMM 73-21-01 UPTO STEP 3G4. ACCOMPLISHED IDT INSPECTION OF #2 ENG FUEL PUMP INSTALLATION PER AMM 73-11-01 AND FMU INSTALLATION PER AMM 73-21-01. AND GMM 09-10-05. COMPLETED INSTALLATION OF #2 ENG FUEL PUMP REF AMM 73-11-01 FROM STEP 3 G(8) THRU COMPLETION,ALSO COMPLETED FMU REPLACEMENT REF AMM 73-21-01 FROM STEP 3 G (4) TO COMPLETION . NO LEAKS NOTED, ACCOMPLISHED POWERPLANT TEST 2A ,3, AND 6 REF AMM.