# SDR ASAA2022051538337

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2022
- Submitted: May 17, 2022
- Operation: Air carrier
- Aircraft: [N592AS](https://openairdocs.org/aircraft/N592AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35190
- Aircraft time: 51,870 hours, 15,376 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Pressure Switch
- Part number: 21C1321
- Condition: Failed
- Location: Right Wing
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022051538337

## Discrepancy

NUMBER 2 AFT FUEL PUMP LOW PRESSURE LIGHT FLICKERING WITH PUMP IN OFF POSITION AND THEN WENT OUT. LOW PRESSURE LIGHT SHOULD REMAIN ON WITH PUMP SWITCH OFF. GROUNDED - YES. TROUBLESHOT #2 AFT BOOST PUMP PRESSURE SWITCH REPLACED PRESSURE SWITCH PER B737-800 AMM 28-42-11-000-801 AND 28-42-11-420-801. OPS CHECK AND GROUND VERIFICATION GOOD. PER AMM 28-42-11-700-801.

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