# SDR ASAA2020070762874

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 6, 2020
- Submitted: July 7, 2020
- Operation: Air carrier
- Aircraft: [N487AS](https://openairdocs.org/aircraft/N487AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44108
- Aircraft time: 18,264 hours, 5,705 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Condition: Malfunctioned
- Location: Nr 1 Hf Comms
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020070762874

## Discrepancy

CANNOT TRANSMIT ON HF RADIO NR 1, CAN RECEIVE ON BOTH HF RADIOS. GROUNDED - YES. PERFORMED BITE IAW FIM 23-11 TASK 801. NO FAULTS NOTED. PERFORMED FIM 23-11 TASK 806 ALL TESTS PASSED. WAS ABLE TO TRANSMIT AND RECEIVE ON HF NR 1 & 2. NO FURTHER DEFECTS NOTED.

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