# SDR ASAA2025021456023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2025
- Submitted: February 18, 2025
- Operation: Air carrier
- Aircraft: [N931AK](https://openairdocs.org/aircraft/N931AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43353
- Aircraft time: 11,618 hours, 3,277 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Indication Sys
- Condition: Malfunctioned
- Location: Fuel
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2025021456023

## Discrepancy

RIGHT MAIN TANK FUEL QTY IND STILL APPEARS TO BE ERRONEOUS. ON GROUND AFTER REFUELING, BOTH MAIN TANKS WERE WITHIN 20 LBS OF EACH OTHER . AFTER PUSH & ENG START OF NR 1 ENG, RT MAIN SHOT UP TO 8.89. THIS TREND CONTINUED THROUGH TAKEOFF, CLIMB & CRUISE UP TO 9.17 LBS. IMBAL LIGHT CAME ON ONCE CENTER TANK PUMPS WERE TURNED OFF. IMBAL BETWEEN 1000 & 750 LBS FOR REMAINDER.  WHILE THERE IS A SUSPECTED PROBLEM WITH THE RT TANK FUEL QTY IND PROBLEM BECAME EXASPERATED WHEN CENTER TANK FUEL PUMPS TURNED OFF AT CRUISE. IMBAL WENT FROM 600 TO 1000 LBS.  FUEL FLOW & FUEL USED REMAINED NEARLY IDENTICAL. GROUNDED - YES. TANK-TO-TANK FEED THRU CONNECTOR REPLACED. ALL LEAK, OP CHKS GOOD.

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