# SDR CALA2026072017894

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2026
- Submitted: July 20, 2026
- Operation: Air carrier
- Aircraft: [N803UA](https://openairdocs.org/aircraft/N803UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 748
- Aircraft time: 84,063 hours, 36,975 cycles
- System (JASC): [3431 · Localizer/VOR System](https://openairdocs.org/jasc/3431)
- Part: Ils System
- Condition: Faulted
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072017894

## Discrepancy

NAV LS TUNING DISAGREE SYSTEM RESET DIDNT WORK INFLIGHT FAULT WAS NOT PRESENT ON ARRIVAL. VERIFIED FREQUENCIES ON LS WERE TUNED TO SAME FREQ PREFORMED BITE TEST OF MMR 1 & 2 IAW AMM 34-36-00-740-006-A NO FAULTS. PREFORMED AFS TEST & LAND TEST IAW AMM 22-97-00-710-001-A / 22-96-00-710-001-A NO FAULTS. AND PREFORMED VOR 1 & 2,  IR SYSTEM TEST REF AMM 34-14-00-740-001-A OPS CHECKS GOOD. COULD NOT DUPLICATE FAULT.

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