# SDR ASAA2021050834766

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 8, 2021
- Submitted: May 10, 2021
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 38,703 hours, 11,282 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 17H6PL
- Condition: Failed
- Location: Nr 2 Hf Comms
- Part time: 23,069 hours, 7,124 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021050834766

## Discrepancy

WHEN SELECTING HF 2, "FAIL" INDICATION DISPLAYED IN BOTH ACTIVE AND STANDBY DISPLAYS. GROUNDED - YES. REMOVED AND REPLACED HF TRANSCEIVER AND OPS CHECKS GOOD IAW B737-800 AMM 23-24-00-400-801.

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