# SDR SIMA20231023001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2023
- Submitted: October 25, 2023
- Operation: Air carrier
- Aircraft: [N292NN](https://openairdocs.org/aircraft/N292NN), 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: 17000843
- Aircraft time: 8,907 hours, 5,852 cycles
- System (JASC): [3430 · Landing and Taxi Aids](https://openairdocs.org/jasc/3430)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: DE
- 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/SIMA20231023001

## Discrepancy

RAD ALT READ 0' AT FL290. DURING DESCENT "LG" WARNING AURAL. QRH PROCEDURES PERFORMED.-C/A-REMOVED LOTS OF COFFEE COATING FROM F/O RAD ALT ANTENNAS WHILE CLEANING THEM. CMC SHOWS NO R.A. FAULTS FOR 5 PREVIOUS FLIGHTS TODAY. F/O RAD ALT OPT CHECKS GOOD PER AMM 34-31-00.

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