# SDR CALA2020032100678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2020
- Submitted: March 21, 2020
- Operation: Air carrier
- Aircraft: [N76288](https://openairdocs.org/aircraft/N76288), registered now
- Make and model: Boeing 737824
- Aircraft serial: 33451
- Aircraft time: 52,208 hours, 18,381 cycles
- System (JASC): [3810 · Potable Water System](https://openairdocs.org/jasc/3810)
- Part: Valve
- Part number: 12D1010
- Condition: Inoperative
- Location: Potable Water
- Stage of operation: UK
- 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/CALA2020032100678

## Discrepancy

WATER NOT FLOWING IN LAVS AND GALLEYS UPDATE: POTABLE WATER TANK SERVICED UNTIL OVERFLOW AT DRAIN. ALSO QUANTITY SHOWS FULL ON CABIN INDICATION GAUGE. REPLACED BLEED AIR FILTER ELEMENT REF AMM 38-42-10-960-801 REPLACED PRESSURE REGULATOR REF AMM 38-42-08-400-801.  NO HELP STILL LOW WATER PRESSURE ROTABLE PARTS CHANGE WAS INDICATED - TT # 1307128  SN OFF 4364 REGULATOR, WATE  OFF 29-3842-9-9001 4364 ON 29-3842-9-9001 0105 REMOVED AND REPLACED FILL OVERFLOW VALVE REF AMM 38-11-03 OPS CHECKS GOOD ROTABLE PARTS CHANGE WAS INDICATED - TT # 1004910  SN OFF 0294 VALVE, FILL/OVE  OFF 29-3811-9-0001 0294 ON 29-3811-9-0001 0983

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