# SDR ASAA2022021837502

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2022
- Submitted: February 23, 2022
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 50,819 hours, 14,828 cycles
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Pressure Switch
- Part number: 21C1322
- Condition: Faulty
- Location: L Ldg Gear W/W
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022021837502

## Discrepancy

ETOPS MANAGER REQUESTS DUE TO RELIABILITY TO REPLACE CENTER TANK LH BOOST PUMP LOW PRESS SWITCH (S154) AND RELAY (R54).  GROUNDED - YES. REMOVED AND REPLACED LEFT CENTER BOOST PUMP GFI RELAY R54 REF B737-800 AMM 28-22-18/401 AND B737-800 WDM 28-23-11 SHT.1. LEFT CENTER BOOST PUMP GFI OPERATIONAL TEST NORMAL. REF AMM 28-22-41-720-802. FUEL LEVELED IN WINGS FOR DISPATCH. 440 LBS REMAIN IN CENTER FUEL TANK. REMOVED AND REPLACED LEFT CENTER BOOST PUMP LOW PRESS SWITCH REF AMM 28-42-11. OPS CHECK GOOD NO LEAKS DETECTED.

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