# SDR ASAA2018032524032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2018
- Submitted: March 26, 2018
- Operation: Air carrier
- Aircraft: [N584AS](https://openairdocs.org/aircraft/N584AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35682
- Aircraft time: 40,347 hours, 12,006 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018032524032

## Discrepancy

ON ARRIVAL,  WHEN BRINGING FLT INTO SCRATCH PAD RECEIVED MESSAGE ON CDU INVALID ENTRY.  ACFT GROUNDED.  BITE TESTED THE LT AND RT FMC IAW FIM 34-61-00-810-801.  NO FAULTS.  NO IN FLT FAULTS.  SENSORS TESTED OK. CDU KEY TEST OK.  CDS FMC INTERFACE OK BOTH FMCS. NO HISTORY 30 DAYS.

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