# SDR AALA202307066397

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2023
- Submitted: July 6, 2023
- Operation: Air carrier
- Aircraft: [N816NN](https://openairdocs.org/aircraft/N816NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31081
- Aircraft time: 40,974 hours, 16,864 cycles
- System (JASC): [7300 · Engine Fuel and Control](https://openairdocs.org/jasc/7300)
- Part: Pressure Switch
- Part number: 21C1321
- Condition: Illuminated
- Location: Zone 200 - Fuse
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202307066397

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AFT FUEL BOOST PUMP ILLUMINATED DURING CLIMB. PERFORMED QRH PROCEDURE TURNED PUMP OFF. REPLACED AFT FUEL BOOST PUMP PRESSURE SWITCH.

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