# SDR UALA2012121407213

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2012
- Submitted: January 28, 2013
- Operation: Air carrier
- Aircraft: [N218UA](https://openairdocs.org/aircraft/N218UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30222
- Aircraft time: 50,307 hours, 6,116 cycles
- Engine: Pwa PW4090
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Processor
- Part number: S243W0011601
- Part serial: 42
- Condition: Malfunctioned
- Location: Lt Fms
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012121407213

## Discrepancy

DURING FMS UPDATE, LEFT FMS FAILED TO LOAD.  ALL DATA ON LEFT SIDE IS LOST UNABLE TO RECOVER.  REPLACED CORE PROCESSOR MODULE-ACMF M002 IN LEFT AIMS CABINET PER MM AND ACCOMPLISHED CPM-ACMF SOFTWARE INSTALLATION PER MM.  LEFT AIMS CHECKS OK, ACCOMPLISHED FMS UPDATE PER MM 34-61-00.

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