# SDR ASAA2017011319368

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2017
- Submitted: January 18, 2017
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 40,462 hours, 11,928 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Compensator
- Part number: 202000104
- Condition: Failed
- Location: Fuel Tank
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017011319368

## Discrepancy

PER T/C NG-28FCD-18088-1 FQIS-NR 1 TANK AND COMPENSATOR UNIT TESTING. FOUND F9 (TANK UNIT OUT OF LIMITS). GROUNDED - YES. REMOVED AND REPLACED F9 TANK UNIT REF AMM 28-41-21. FQIS SYSTEM TEST PASSED AND NO FAULTS REF AMM 28-41-00. FUEL ACCESS PANELS CHECK NO LEAKS REF AMM 28-11-11. COMPARISON CHECKS GOOD REF AMM 28-41-00.

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