# SDR ASAA2022022137545

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2022
- Submitted: March 17, 2022
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 33,445 hours, 10,641 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Pressure Switch
- Part number: 21C1321
- Condition: Inoperative
- Location: R Wing Rear Spar
- Stage of operation: NR
- How discovered: V
- Nature of condition: P
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022022137545

## Discrepancy

R/H AFT FUEL PUMP LOW PRESSURE LT DOES NOT ILLUMINATE WITH SWITCH IN OFF POSITION. GROUNDED - YES. REMOVED AND REPLACED RIGHT AFT BOOST PUMP (FUEL) PRESSURE SWITCH , OPS CHECK GOOD AND GROUND VERIFICATION SUCCESSFUL REF B737-900 AMM 28-42-11.

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