Service difficulty report · Hydraulic System · Boeing 7377H4

Difficulty date
August 1, 2023
Submitted
August 4, 2023
Operation
Air carrier
Aircraft
N258WN
Make and model
Boeing 7377H4
Aircraft serial
32516
Aircraft time
55,971 hours, 33,514 cycles
Part
Hydraulic System
Part number
UNKNOWN
Condition
Failed
Location
Zn 100 Fus Lower
Stage of operation
TO
How discovered
9
Nature of condition
K, O
Precautionary procedure
O

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

What was found

AT ROTATION WE HAD INDICATIONS OF A BLOWN TIRE. WE DID NOT RAISE THE LANDING GEAR. WE DID NOT HAVE ANY OTHER INDICATIONS OTHER THAN ANTI-SKID INOP. WHILE RETURNING TO THE FIELD WE LOST THE #1 ENG HYD PUMP. PRESSURE NORMAL BUT QUANTITY WAS LOW AND DECREASING. SUBSEQUENTLY LOST ALL OF SYSTEM A HYD. ON LANDING ROLL WE LOST SYS B HYD.<[01] REF WO 58753274 FOR ALL MX PERFORMED.

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