Service difficulty report · None · Boeing 777

Difficulty date
September 24, 2022
Submitted
September 26, 2022
Operation
Air carrier
Aircraft
N787UA
Make and model
Boeing 777
Aircraft serial
26939
Aircraft time
99,482 hours, 13,422 cycles
Part
None
Part number
35059208
Part serial
0365
Condition
None
Location
Left Center Adp
Stage of operation
TO
How discovered
O
Nature of condition
D, J, K
Precautionary procedure
A, D, J

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

What was found

DURING GEAR RETRACTION HYD PUMP DEM C1 MESSG CAME ON MOMENTARILY .. AFTER MESSAGE TOWER CALL SAID SPARKS COMMING FROM LEFT ENG.FLIGH REPORTED SMELL AND SPAR KS. ALSO STRANGE SMELL...PER CREW...TOMC REMOVED THE AIR DRIVEN PUMP ASSEMBLY IAW AMM 29-11-10-000-801 INSTALLED THE AIR-DRIVEN PUMP ASSEMBLY IAW AMM 29-11-10-400-801 T ATT ALSO MO ADD EMP:U235821 UP TO AND INCLUDING STEP G(5)(G) . ADD EMP:U235821 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1117796 SN OFF 0365 PUMP, HYD AIR D OFF 25-2911-9-0023 0365 ON 25-2911-9-0023 0790 CONTINUED INSTALLATION OF THE C1 AIR-DRIVEN PUMP ASSEMBLY IAW AMM 29-11-10-400-801 UP TO AND INCLUDING STEP G(11). NEED TO CONTINUE INSTALLATION TO COMPLETION. ADD EMP:U244239 PERFORMED INSTALLATION OF (C1) ADP ASSEMBLY IAW AMM TASK PERFORMED OIL SERVICING OF C1 ADP TURBINE GEARBOX ASSY IAW AMM 29-11-10-400-801 FROM G(12) UP TO AND INCLUDING STEP G(18). TASK 12-13-05-610-801. CONTINUED WITH INSTALLATION OF C1 AIR-DRIVEN PUMP ASSEMBLY IAW AMM 29-11-10-400-801 FROM STEP H THRU COMPLETION. OPS AND LEAK CHECK GOOD