# SDR ASAA2021101036276

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2021
- Submitted: October 15, 2021
- Operation: Air carrier
- Aircraft: [N487AS](https://openairdocs.org/aircraft/N487AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44108
- Aircraft time: 21,982 hours, 6,858 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 1862KV
- Condition: Inoperative
- Location: Ee Rack, E8
- Part time: 47,256 hours, 15,402 cycles
- 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/ASAA2021101036276

## Discrepancy

HF 2 WOULD NOT RECEIVE SELCAL AND VOICE. GROUNDED - YES. REMOVED & REPLACED #2 TRANSCEIVER. OPS CK GOOD. REF B737-900 AMM 23-11-21.

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