# SDR ASAA2018071725453

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2018
- Submitted: July 19, 2018
- Operation: Air carrier
- Aircraft: [N487AS](https://openairdocs.org/aircraft/N487AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44108
- Aircraft time: 11,031 hours, 3,649 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Satcom
- Condition: Malfunctioned
- Location: Cockpit
- 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/ASAA2018071725453

## Discrepancy

WHEN MAKING SATCOM CALL ON SAT1 & SAT2, DISPATCH WAS UNABLE TO HEAR US. WE COULD HEAR THEM. ALL BUTTONS PUSHED CORRECTLY. GROUNDED - YES. PERFORMED SATCOM SYSTEM ADJ/TEST REF AMM 23-15-00/501 & NR 1 NR 2 OPS NORMAL. COULD NOT DUPLICATE.

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