Service difficulty report · Pump · Boeing 777FS2

Difficulty date
September 3, 2022
Submitted
September 10, 2022
Operation
Air carrier
Aircraft
N890FD
Make and model
Boeing 777FS2
Aircraft serial
41439
Aircraft time
39,275 hours, 6,393 cycles
Part
Pump
Part number
972952
Part serial
MX758476
Condition
Failed
Location
Hyd System
Stage of operation
LD
How discovered
O
Nature of condition
K
Precautionary procedure
O

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

What was found

HYDRAULIC QUANTITY CENTER LOW NNC FOLLOWED BY RESERVE BRAKES STRG NNC. BOTH ECL CHECKLISTS RUN, SLOW LOSS OF CENTER HYDRAULIC QUANTITY UNTIL TOUCHDOWN. NORMAL EXTENSION OF GEAR AND FLAPS. LANDED STRAIGHT AHEAD AND AIRCRAFT TOWED IN. CENTER HYDRAULIC QUANTITY STABLE AT 0.12 AT SHUTDOWN. ***EMERGENCY DECLARED*** R & R'ED C1 ADP PUMP AND ALL TEST PASSED PER AMM 29-11-11-4. SERVICED CENTER HYD PER AMM 12-12-01-3. ORIG SUB DATE: 9/6/2022

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