# SDR SIMA202305154001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2023
- Submitted: May 15, 2023
- Operation: Air carrier
- Aircraft: [N252NN](https://openairdocs.org/aircraft/N252NN), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000642
- Aircraft time: 15,530 hours, 10,068 cycles
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: LD
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA202305154001

## Discrepancy

CREW RPTD LOST ALL NAVS. RTD TO DFW. NOT ABLE TO USE INSTRUMENT LANDING APPRCH IN DFW /UNABLE TO DO VISUAL. DVRTD TO SHV AND DECLARED EMERGENCY. LANDED SAFELY IN SHV.-C/A-PERFORMED FUNCTIONAL TEST OF LOCALIZER, LAND 2 AND GLIDESLOPE. 1 AND 2 CHECK IS GOOD IAW AMM 34-32-00

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