# SDR ASAA2021032534421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2021
- Submitted: March 29, 2021
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 38,622 hours, 11,257 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 180TR1
- Condition: Malfunctioned
- Location: Nr 2 Hf Sys
- Part time: 24,149 hours, 6,855 cycles
- 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/ASAA2021032534421

## Discrepancy

HF2 RADIO UNREADABLE. GROUNDED - YES. REMOVED AND REPLACED PER B737-800 AMM 23-11-21-000-801 GROUND VERIFICATION WAS SUCCESSFUL. NO DEFECTS NOTED OK FOR SERVICE.

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