# SDR ASAA201904018823

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2019
- Submitted: April 1, 2019
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 38,943 hours, 11,605 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Hf Comm
- Condition: Malfunctioned
- Location: Nr 1
- 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/ASAA201904018823

## Discrepancy

#1 HF WILL NOT TRANSMIT. GROUNDED - YES. RESET C/B PER B737-800 AMM 20-60-01. PERFORMED HF COMMUNICATION SYSTEM BITE PROCEDURE PER B737-800 FIM 23-11-TASK 801, BITE TEST GOOD NO FAULTS, OPS CHECK HF TRANSCEIVER OPS TEST GOOD OK FOR SERVICE, GROUND VERIFICATION, TEST GOOD.

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