SDR CALA2021091001548

Service difficulty report · Indicator · Boeing 737824

Difficulty date: September 10, 2021
Submitted: September 10, 2021
Operation: Air carrier
Aircraft: N76508
Make and model: Boeing 737824
Aircraft serial: 31639
Aircraft time: 44,777 hours, 15,343 cycles
System (JASC): 2930 · Hydraulic Indicating System
Part: Indicator
Condition: False Indication
Location: Hyd System
Stage of operation: CR
How discovered: O
Nature of condition: N
Precautionary procedure: A

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

What was found

DURING CRUISE NOTICED HYD QUANTITY LOSS OF APROX 1 PERCENT EVERY 5 MINUTES CONTACT TOMC BEFORE CLEARING ITEM. UNLOCKING CYCLED GEAR HANDLE, FLIGHT CONTROLS, INSPECTED SHREDDER VLV FOR RESERVOIR HEAD PRESSURE, CYCLED T/R , FIRST TIME WITH ELEC PUMPS, 2ND TIME WITH EDP, NO LEAK NOTED. HYD QTY NEVER CHANGED. REF. AMM TASK 29-10-00-810-812