# SDR AALA202003069021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2020
- Submitted: March 17, 2020
- Operation: Air carrier
- Aircraft: [N186US](https://openairdocs.org/aircraft/N186US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1701
- Aircraft time: 60,865 hours, 22,975 cycles
- System (JASC): [2350 · Audio Integrating System](https://openairdocs.org/jasc/2350)
- Part: Amu
- Part number: AMU3514CS01
- Part serial: 0388
- Condition: Defective
- Location: Zone 100
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202003069021

## Discrepancy

AIRCRAFT WAS GROUNDED: UNABLE TO TRANSMIT OR RECIEVE ON #2 OR #3 RADIOS. **SUPPLEMENTAL ACTION SECT 4 AND 5: REPLACED AMU IAW AMM 23-51-34 #2 VHF COM OPS CHECK NORMAL. ALSO SEE AALA202003179012.

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