# SDR ASAA2018041724282

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2018
- Submitted: April 18, 2018
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 30,689 hours, 9,090 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/ASAA2018041724282

## Discrepancy

TRIED TO TRANSMIT ON BOTH SATCOM RADIOS WITHOUT SUCCESS. KEPT GETTING RECORDED MESSAGE STATING IT WASN'T A TOLL FREE CALL. COULD NOT COMPLETE CALL TO DISPATCH. DISPATCH TRIED TO CALL US AND COULD NOT CONNECT.  ACFT GROUNDED.  PERFORMED SATCOM COMMUNICATION SYSTEM TEST IAW AMM 23-25-00, STEPS 1, AND 2.  BOTH INCOMING AND OUTGOING CALLS WERE LOUD AND CLEAR. ACFT OKAY FOR CONTINUED SERVICE.

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