# SDR ASAA2021032434400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2021
- Submitted: March 29, 2021
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 53,787 hours, 16,081 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Satcom
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021032434400

## Discrepancy

WHEN MAKING SATCOM CALLS WE COULD HEAR THE CALL RECEPIENT BUT THEY COULD NOT HEAR US. TRIED SATCOM 1 AND 2 AND ALL AIRCRAFT MICS. GROUNDED - YES. ACCOMPLISHED OPS CHECKS REF B737-800 AMM 23-15-00-730-801. NO FAULTS FOUND.

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