# SDR SWAA2026072809480

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2026
- Submitted: July 29, 2026
- Operation: Air carrier
- Aircraft: [N250WN](https://openairdocs.org/aircraft/N250WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34972
- Aircraft time: 65,186 hours, 39,629 cycles
- System (JASC): [2841 · Fuel Quantity Indicator](https://openairdocs.org/jasc/2841)
- Part: Tank Unit
- Part number: 202000211
- Part serial: BN786421
- Condition: Leaking
- Location: Zone 600
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026072809480

## Discrepancy

INFLIGHT NR 2 FUEL IMBALANCE CLIMBING THROUGH FL 250, NOTICED NR 2 FUEL QUANITY DECREASE BELOW #1 ENGINE QUANITY. FUEL IMBALANCE WAS GRATER THAN 3,000LBS. CREW RAN QRH AND SHUT DOWN THE ENGINE. UPON A/C REACHING THE GATE INSPECTED A/C FOR OBVIOUS SIGNS OF A FUEL LEAK IN REFERENCE TO AMM 28-11-00. FOUND NO OBVIOUS SIGNS OF A FUEL LEAK COMING FROM THE RH ENGINE RH WING OR WHEEL WELL AREAS. CHECK FUEL QUANTITY AT THE REFUEL/DEFUEL PANEL. LH WING HAD 6260 AND THE RH WING 3910 CENTER READ ZERO. CHECK THE FUEL QUANTITY ON EICAS FOUND TO BE CONSISTENT WITH THE FUEL PANEL. TRANSFERRED LH WING TO THE RH WING TO ABOUT EVEN. PERFORMED FQIS BITE TEST IN REFERENCE TO FIM 28-41 TASK 801. FOUND NO FAULTS STORED OR CURRENT FAULTS. PERFORMED BOTH #1 AND #2 ENGINE RUNS IN REFERENCE TO AMM 72-00-00 FOR 5 MINUTES. FOUND NO ABNORMAL FUEL FLUCTUATIONS AND NO LEAKS NOTED AFTER SHUT DOWN. PERFORMED FUEL MEASURING STICK READINGS WHEN TANKS WERE ABOUT EVEN GOT STICK 4 ON THE RH TO READ ABOUT 5.4 WITHIN LIMITS. TRANSFERRED FUEL BACK TO ORIGINAL NUMBERS AT ARRIVAL TO THE GATE AND GOT STICK 3 TO READ 11.2 WHICH IS ALSO WITHIN LIMITS OF SP#28 OF MEL 28-6-01.REMOVED AND REPLACED RT WING TANK COMPENSATOR AND TANK UNITS , F2, F3, AND F5 PER AMM 28-41-21 SEE ATTACHED AEROTEAMS W/O 66-26167.

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