# SDR IPXA2017090121239

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2017
- Submitted: September 1, 2017
- Operation: Air carrier
- Aircraft: [N273UP](https://openairdocs.org/aircraft/N273UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48574
- Aircraft time: 64,834 hours, 12,268 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Stage of operation: DE
- 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/IPXA2017090121239

## Discrepancy

DURING DECENT, FMC WOULD NOT ALLOW A SPEED GREATER THAN 310 KIAS. DID NOT FOLLOW PROFILE.  PERFORMED RTS TEST BOTH FMCS PASSED, FMC SPEED ERROR INDUCED BY THE NR 3 MAIN FUEL TANK QTY INOPERATIVE TIP MESSAGE.

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