# SDR CALA2017012300162

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2017
- Submitted: January 23, 2017
- Operation: Air carrier
- Aircraft: [N38446](https://openairdocs.org/aircraft/N38446), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 31661
- Aircraft time: 17,002 hours, 5,990 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2017012300162

## Discrepancy

ALTITUDE SHOWS 1000 FEET LESS. PERFORMED FLIGHT MANAGEMENT COMPUTER SYSTEM BITE PROCEDURE IAW MM 34-61-00-810-801.  LEFT AND RIGHT FMC SYSTEM BITE CHECKED GOOD, NO FAILURES NOTED.

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