Service difficulty report · Carbon Seal · Boeing 777224

Difficulty date
August 1, 2025
Submitted
August 5, 2025
Operation
Air carrier
Aircraft
N57016
Make and model
Boeing 777224
Aircraft serial
28679
Aircraft time
116,995 hours, 11,947 cycles
Engine
Ge GE9090B
Part
Carbon Seal
Condition
Leaking
Location
Nr 1 Engine
Stage of operation
IN
How discovered
V
Nature of condition
K, B
Precautionary procedure
K

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

What was found

NR 1 ENGINE HAS BEEN TRENDING STABLE AT A HIGH OIL CONSUMPTION (0.65-0.75QPH). ACCOMPLISHED SNIFF CHECK FOR FUEL IN OIL SYSTEM AND BAGGED DRAIN LINES COMING FROM ACCESSORY GEAR BOX FOR PART POWER LEAK IAW FIM 71-05 TASK 805. FOUND IDG CARBON SEAL LEAKING AND ALSO COMING FROM IDG QUAD RING. ACCOMPLISHED EGC REF FIM 71-05 TASK 805. FOUND IDG DRIVE PAD LEAKING OIL.