# SDR ASAA2021011933905

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2021
- Submitted: January 22, 2021
- Operation: Air carrier
- Aircraft: [N593AS](https://openairdocs.org/aircraft/N593AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35107
- Aircraft time: 47,388 hours, 14,285 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Sensor
- Part number: 2020003030305020
- Condition: Failed
- Location: Lt Fuel Qty
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021011933905

## Discrepancy

NR 1 FQIS FAILS SYSTEM TEST AT 401.7 PF AND LEFT MAIN TANK READS 300 LBS EMPTY.  GROUNDED-YES.  REPLACED TANK UNITS 3, 5, 8, AND 10, PER B737-800 AMM 28-41-21/401.  VALUES NOW WITHIN LIMITS PER AMM 28-41-21/501.  LEAK CHECKS GOOD.  GROUND VERIFICATION SUCCESSFUL.

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