# SDR CALA2022082202141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2022
- Submitted: August 22, 2022
- Operation: Air carrier
- Aircraft: [N224UA](https://openairdocs.org/aircraft/N224UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30225
- Aircraft time: 77,847 hours, 9,047 cycles
- System (JASC): [3461 · Flight Management Computing Software System](https://openairdocs.org/jasc/3461)
- Part: I/O Module
- Part number: NA
- Condition: Unserviceable
- Location: Lt & Rt I/O Mod
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022082202141

## Discrepancy

INBOUND FLT. CREW REPORTS BOTH FMC''S LOST WAYPOINTS AND ROUTE INFO TO CAPT''S AND FO''S NAV. DISPLAYS IMMEDIATELY FOLLOWING DEPARTURE. REPLACED BOTH LEFT AND RIGHT I/O MODULES M004. OK TO CONTINUE.

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