Service difficulty report · Pump · Boeing 7377CT

Difficulty date
November 6, 2024
Submitted
November 8, 2024
Operation
Air carrier
Aircraft
N7828A
Make and model
Boeing 7377CT
Aircraft serial
33697
Aircraft time
45,839 hours, 27,808 cycles
Part
Pump
Condition
Leaking
Location
Zone 100
Stage of operation
AP
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

HYD SYS B QTY WENT TO 0; FOLLOWED BY ENG HYD LOW PRESS LIGHT.<[01] FOUND B ENGINE DRIVEN HYDRAULIC PUMP LEAKING AT PRESSURE FITTING. DUE TO POSSIBILITY DAMAGE FROM PUMP CAVITATION; REMOVED PUMP AND PRESSURE LINE PER AMM 29-11-11.;[02] INSTALLED B ENGINE HYDRAULIC PUMP PER AMM 29-11-11 ON NUMBER 2 ENGINE UP TO STEP I. ?ENGINE HYDRAULIC TEST?;[03] PERFORMED ENGINE HYDRAULIC TEST AND COMPLETED AMM 29-11-11. OPS CHK NORMAL AND LEAK CHK GOOD AT HIS TIME;[04] CORRECTING SIGN-OFF VERBIAGE TO ----- INSTALLED B ENGINE HYDRAULIC PUMP; AND PRESSURE LINE PER AMM 29-11-11 ON NUMBER 2 ENGINE UP TO STEP I. ?ENGINE HYDRAULIC TEST?

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