SDR CALA2022111603154

Service difficulty report · Module · Boeing 737724

Difficulty date: November 16, 2022
Submitted: November 16, 2022
Operation: Air carrier
Aircraft: N16713
Make and model: Boeing 737724
Aircraft serial: 28784
Aircraft time: 71,769 hours, 25,138 cycles
System (JASC): 2930 · Hydraulic Indicating System
Part: Module
Condition: Leaking
Location: Nr1 Hyd System
Stage of operation: DE
How discovered: O
Nature of condition: K, J
Precautionary procedure: O

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

What was found

ENGINE 1 LOW HYDRAULIC PRESSURE LIGHT DURING DESCENT. QUANTITY GAUGE READ 18 PERCENT. FOUNDS SYS A PRESSURE MODULE LEAKING. ADD EMP:349838 CHECKED #1 ENG EDP CASE DRAIN FILTER. NO DEFECTS NOTED. R/R CASE DRAIN FILTER IAW AMM 29-11-51. LEAK CHECK GOOD DURING #1 ENG DRY MOTOR FOUND HYD LEAK FROM WORN SEAL IN OUTBOARD SUPPLY LINE TO SYSTEM A PRESSURE MODULE. R/R SEAL IN HYD LINE IAW AMM 29-11-71. LEAK CHECK GOOD. SYSTEM A AND B QUANTITY LEVELS READING GOOD.