# SDR SIMA20210430001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2021
- Submitted: May 2, 2021
- Operation: Air carrier
- Aircraft: [N245NN](https://openairdocs.org/aircraft/N245NN), 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: 17000614
- Aircraft time: 11,030 hours, 7,131 cycles
- System (JASC): [3444 · Ground Proximity System](https://openairdocs.org/jasc/3444)
- Part: Radio Altimeter
- Condition: Malfunctioned
- Location: Nr 1
- Stage of operation: CR
- 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/SIMA20210430001

## Discrepancy

AT 11000 FT. LANDING GEAR AURAL WARNING CONTINOUS COULD NOT BECANCELED CAS RADIO ALTIMETER SHOWED ZERO FT PUT GEAR DOWN TO SILENCE NO AURAL ALT ALERTS ON FINAL.-C/A-NO.1 RAD ALT DEFERRED PER MEL 34-15 AUTHNO. 040621M-C M PROCEDURED CW

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