# SDR 2023F00255

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2023
- Submitted: August 22, 2023
- Operation: General aviation
- Make and model: Boeing 767-3S1
- Registry model: [Boeing 767-3S1](https://openairdocs.org/model/boeing-767-3s1) (OpenAirDocs)
- Aircraft serial: 26608
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: V
- Nature of condition: S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023F00255

## Discrepancy

INFLIGHT WE LOS FMA INDICATION + RTE 1&2 ON CDU. CORRECTIVE ACTION LRU: CLEANING FMC#1, FMC#2, CDU#1, CDU#2 IAW AMM 20-60-06. PERFORMED FIM 34-61 FAULT TREE 857 854 ON GROUND SYSTEM OK.

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