# SDR ASAA2022040637929

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2022
- Submitted: April 11, 2022
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 36,492 hours, 10,647 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Unknown
- Stage of operation: NR
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022040637929

## Discrepancy

REF TSR 711704, HF1 AND HF2 VOICE COMMUNICATION TEST FAILS. GROUNDED - YES. PERFORMED SYSTEM TEST OF BOTH #1 & #2 HF'S PER B737-800 AMM 23-11-00 PG# 501, BOTH SYSTEMS OPS CHECKED GOOD WHEN CALLING SFO AND LOCAL SEA FREQUENCIES FROM AIRCRAFT TO AIRCRAFT.

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