# SDR ASAA2021011133862

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2021
- Submitted: January 13, 2021
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 49,901 hours, 14,855 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Switch
- Part number: G716401
- Part serial: 372
- Condition: Inoperative
- Location: Hf/Sat Comms
- Part time: 25,350 hours, 8,039 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/ASAA2021011133862

## Discrepancy

HF/SAT SELECT PANEL HF/SAT XFER SWITCH NR 1 UNABLE TO SELECT SAT.  GROUNDED-YES.  REPLACED HF/SAT PANEL, REF B737-800 AMM 23-15-00-400-804.  OPERATIONS TEST PASS.

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