# SDR ASAA2021080935665

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2021
- Submitted: August 14, 2021
- Operation: Air carrier
- Aircraft: [N469AS](https://openairdocs.org/aircraft/N469AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41702
- Aircraft time: 26,471 hours, 8,535 cycles
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Pressure Switch
- Part number: 21C1322
- Condition: Inoperative
- Location: Boost Pump
- Stage of operation: IN
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021080935665

## Discrepancy

REF TSRA711045 RIGHT CENTER PUMP BOOST PUMP REMOVAL/REPLACEMENT, FOUND LOW PRESSURE LIGHT ON AFTER REPLACEMENT OF PUMP. PERFORMED B737-900 FIM 28-22 TASK 802 AND FOUND LOW PRESSURE SWITCH S155 INOP. GROUNDED - YES. REMOVED AND REPLACED RIGHT CENTER PRESSURE SWITCH REF B737-900 AMM 28-42-11 OPS CHECK GOOD.

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