# SDR ASAA2020011331812

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2020
- Submitted: January 14, 2020
- Operation: Air carrier
- Aircraft: [N487AS](https://openairdocs.org/aircraft/N487AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44108
- Aircraft time: 16,865 hours, 5,313 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Malfunctioned
- Location: Hf Comm
- 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/ASAA2020011331812

## Discrepancy

NUMBER 1 HF RADIO WON'T TRANSMIT. GROUNDED - YES. SYS TEST NR 1 HF GOOD. SFO ARINC RADIO READS IT 5 BY 5 FROM ANC. REF AMM 23-11-00. GRD VERIFICATION GOOD.

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