Service difficulty report · Line · Boeing 777FS2

Difficulty date
December 15, 2019
Submitted
December 17, 2019
Operation
Air carrier
Aircraft
N856FD
Make and model
Boeing 777FS2
Aircraft serial
37727
Aircraft time
37,740 hours, 5,814 cycles
Part
Line
Condition
Leaking
Location
Hyd System
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
O

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

What was found

PDIS 856 29-02 9464 15DEC19 LGG FACT U LOGPAGES:3029639 HYD QTY LOW C EICAS MESSAGE FOLLOWED BY RESERVE BRAKES / STRG MESSAGE. ISLN VALVES CLOSED AT .40 LEAK STOPPED AT .36. PART 15DEC19 16:38 MC1 U IDENTIFIED PARTS MPN: AE717930-1 QTY: 1 PART 15DEC19 16:39 MC1 U ORDER PART MPN: AE717930-1 QTY: 1 MSN: 1998089 FACT 15DEC19 18:05 LGG U PERFORMED LEAK CHECK AND FOUND #8 BRAKE PRESS LINE LEAKING AT THE NUT WHERE IT CONNECTS TO THE QUICK DISCONNECT ON TOP OF THE #8 BRAKE. REF IPC 32-41-00-7A, SHEET 005, ITEM 100. FOUND NUT BACKED OFF AND ONLY FINGER TIGHT. TIGHTENED HYD LINE IAW AMM 20-10-10-4 AND PERFORMED LEAK CHECK AGAIN. LEAK CHECK NOW SATIS. CHECKED ALL OTHER 11 BRAKE LINES AND FOUND TORQUE SATIS. A/C OK TO CONTINUE.

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