# SDR ASAA2019092730841

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2019
- Submitted: September 30, 2019
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 16,111 hours, 5,241 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Malfunctioned
- Location: Satcom
- 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/ASAA2019092730841

## Discrepancy

CAN MAKE OUTGOING CALLS ON SATCOM. BUT INCOMING SATCOM VOICE CALLS FROM DISPATCH WERE UNSUCCESSFUL. RECEIVED NO INDICATIONS ON HF/SAT SELECT PANEL. NO CHIME, NO LIGHT SAT MENU ON MCDU ALSO SHOWED NO INDICATION OF INCOMING CALL. DISPATCH TRIED 4 TIMES. GROUNDED - YES. CDOULD NOT DUPLICATE. OPS CHECK GOOD REF B737-900 AMM 23-15-00. GROUND VERIFICATION SUCCESSFUL.

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