# SDR ASAA2019011927866

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2019
- Submitted: January 23, 2019
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 39,955 hours, 11,996 cycles
- System (JASC): [2842 · Fuel Quantity Sensor](https://openairdocs.org/jasc/2842)
- Part: Tank Unit
- Part number: 202000311
- Condition: Out Of Limits
- 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/ASAA2019011927866

## Discrepancy

TECH SERVICE REQUEST. FOLLOW-UP TO REPORTS OF FUEL IMBALANCE, TECH SERVICE REQUESTS L/H TANK AND COMPENSATOR UNITS TEST. GROUNDED - YES. FOUND 4 TANK UNITS OUT OF LIMITS - F2L, F3L, F6L, F8L. REMOVED AND REPLACED F3L, F6L, AND F8L PER AMM 28-41-21/401. REMOVED AND REPLACED FUEL PROBE TANK UNIT F2L IAW AMM 28-41-21/401. PERFORMED FQIS SYSTEM TEST REF AMM 28-41-00-730-801 OPS CK GOOD. LEAK CK GOOD REF AMM 28-11-00.

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