# SDR CALA2024062500094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 25, 2024
- Submitted: June 26, 2024
- Operation: Air carrier
- Aircraft: [N17719](https://openairdocs.org/aircraft/N17719), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28938
- Aircraft time: 79,517 hours, 28,960 cycles
- System (JASC): [2932 · Hydraulic Pressure Sensor](https://openairdocs.org/jasc/2932)
- Part: Transducer
- Part number: PTX30080092
- Condition: Leaking
- Location: Hyd Pressure
- Stage of operation: DE
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024062500094

## Discrepancy

HYDRAULIC PRESSURE INDICATION ZERO SYSTEM A HYD SYS A LOSS LOCKED FOR COMPLIANCE UNLOCK. VERBAL FROM CREW. HYD QTY GOT DOWN TO 10% IN FLIGHT (READS 31 ON GROUND NOW). PRESSURE REMAINED AT 2950 WHILE PUMPS WERE ON. PUMPS OFF. NW STEERING TO ALT. RUDDER SWITCH TO STBY. GEAR DROPPED WITH MANUAL EXTENSION. LEFT T/R OPERATED NORMAL. FOUND A SYS PRESSURE TRANSDUCER LEAKING AT ADAPTER. REF IPC 29-11-71-01. REQUIRES O-RING ITEM 45. P/N NAS1612-8. REMOVED AND REPLACED PRESSURE TRANSDUCER REF AMM 29-11-71. OPS AND LEAK CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.