# SDR SWAA2026092514349

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2026
- Submitted: September 26, 2026
- Operation: Air carrier
- Aircraft: [N473WN](https://openairdocs.org/aircraft/N473WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33832
- Aircraft time: 72,907 hours, 43,693 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Fuel Sys
- Condition: Faulted
- Location: Zone 600
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026092514349

## Discrepancy

DURING CRUISE,  NR 2 FUEL GAUGE PROGRESSED TO 400 LBS MORE THAN NR 1 TANK WITH CONSISTENTLY SLIGHTLY HIGHER FUEL FLOW.  CROSSFED TO 200 LBS HIGHER IN NR 2 TANK, THEN NR 2 TANK EQUALIZED TO NR 1 TANK READINGS. SUSPECT INDICATING ERROR ON NR 2 TANK GAUGE.  PERFORMED FQIS BITE AND FOUND NO HISTORICAL FAULTS. PERFORMED NR 2 TANK UNITS AND COMPENSATOR WET CAPACITANCE CHECK IAW AMM 28-41-21. NO DEFECTS NOTED. REQUIRES FURTHER TROUBLESHOOTING. OK TO CONTINUE PER MEL 28-6-01 SP1 SP3. REF TANK TIGER REPAIR WO TT04060 FOR ALL WORK PERFORMED. ACFT OK FOR SERVICE.

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