# SDR CALA2022111603154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2022
- Submitted: November 16, 2022
- Operation: Air carrier
- Aircraft: [N16713](https://openairdocs.org/aircraft/N16713), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28784
- Aircraft time: 71,769 hours, 25,138 cycles
- System (JASC): [2930 · Hydraulic Indicating System](https://openairdocs.org/jasc/2930)
- Part: Module
- Condition: Leaking
- Location: Nr1 Hyd System
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022111603154

## Discrepancy

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.

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