# SDR UIEA2023082500797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2023
- Submitted: August 28, 2023
- Operation: Air carrier
- Aircraft: [N473MC](https://openairdocs.org/aircraft/N473MC), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27174
- Aircraft time: 115,174 hours, 20,687 cycles
- System (JASC): [3453 · Long-Range Navigation (LORAN) System](https://openairdocs.org/jasc/3453)
- Part: Unknown
- Part number: 90080001001
- Part serial: NXE11904
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2023082500797

## Discrepancy

BOTH ATC FAILED IN FLIGHT. UNABLE TO ENTER MEXICAN AIRSPACE. DIVERTED TO LAX. ENTERED ON LP 1769776 ITEMS 2 & 3(<P>LOGBOOK PAGE 1769776 ITEM 2 (ATC-LEFT) R/R  LH ATC IAW AMM- 34-53-02. OPS CHECK GOOD.</P> / <P>LOGBOOK PAGE 1769776 ITEM 3 (ATC-RIGHT) PERFORMED RH ATC GROUND TEST IAW AMM-34-53-02, MSG CLEARED</P>)

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