Service difficulty report · Pump · Boeing 737890

Difficulty date
September 5, 2023
Submitted
September 8, 2023
Operation
Air carrier
Aircraft
N569AS
Make and model
Boeing 737890
Aircraft serial
35184
Aircraft time
58,996 hours, 17,829 cycles
Part
Pump
Part number
66087
Part serial
660876978
Condition
Leaking
Location
Nr 2 Hyd
Part time
28,710 hours, 9,009 cycles
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

FOUND HYD LEAK UNDER #2 ENG PERFORMED ALTERNATE DEACTIVATION PROCEDURES PER CHAP 5 TABLE 3 ITEM 7. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE DRIVEN HYD PUMP REF. AMM CH 29-11-11, RAN #2 ENGINE FOR LEAK CHECK AND FOUND HYD PRESSURE LINE ON UPPER PORTION OF THE PUMP WAS LEAKING 56595.REPLACED #2 ENG EDP HYD PRESSURE LINE. PERFORMED LEAK CHECK. LEAK CHECK GOOD IN REF TO AMM 29-11-11. REVERSED DEACTIVATION PROCEDURES PER CHP 5 TABLE 3 ITEM 7.