# SDR CALA2014060900737

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2014
- Submitted: June 9, 2014
- Operation: Air carrier
- Aircraft: [N38443](https://openairdocs.org/aircraft/N38443), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 31655
- Aircraft time: 11,614 hours, 3,968 cycles
- System (JASC): [2932 · Hydraulic Pressure Sensor](https://openairdocs.org/jasc/2932)
- Part: Transmitter
- Part number: 29290999001
- Part serial: 2774
- Condition: Faulty
- Location: Hydraulic Sys
- Part time: 19,668 hours, 6,661 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014060900737

## Discrepancy

AT FL350 HYD SYS A QTY INDICATING 74% & CONTINUED TO DROP.  QTY A LOWEST LEVEL INDICATED 62%, DROPPING 1% - 2% EVERY 8 TO 10 MINUTES.  PRESS ON SYS A REMAINED AT 3050 PSI, SYS B QTY DROPPED TO 85%.  REPLACED SYS A HYD QTY TRANSMITTER IAW AMM 29-33-12.  SERVICED RESERVOIR TO 97%, B SYS AT 92%.  CYCLED FLT CONTROLS & FOUND NO LEAKS.  NO HISTORY OF PROBLEM.  ROTABLE PARTS CHANGE WAS INDICATED TT  1610961, SN OFF 02774 TRANSMITTER, HY OFF 29-2909-9-9001 2774 ON 29-2909-9-90011996.

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