# SDR SWAA2026062214191

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2026
- Submitted: June 23, 2026
- Operation: Air carrier
- Aircraft: [N8570W](https://openairdocs.org/aircraft/N8570W), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36952
- Aircraft time: 26,929 hours, 13,928 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CL
- 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/SWAA2026062214191

## Discrepancy

INACCURATE FMC FUEL PREDICTIONS AND FMC NR 2 FAILURE IN FLIGHT. FMC ARRIVAL FUEL 1.5LBS BELOW REQUIRED FUEL. FMC USING RESERVE FUEL WARNINGS.  PERFORMED FUEL QTY DRIP STICK READINGS IAW AMM 28-41-00. #1 TANK HAD 3020 LBS AND STICK 3 READ 8.4. NR 2 TANK HAD 3360 AND STICK 3 READ 9.6. BOTH READS ARE CORRECT. SUSPECT PROBLEM IS WITH THE NR 2 FMC. OK TO CONTINUE NR 2 FMC ON MEL 34-36-01; SP1.  REPLACED NR 2 FMC COMPUTER IAW AMM 34-61-02.

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