# SDR ASAA2021092736093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2021
- Submitted: September 30, 2021
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 29,716 hours, 9,455 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Control Panel
- Part number: G716401
- Part serial: 469
- Condition: Inoperative
- Location: Nr 1 Hf Comms
- Part time: 19,215 hours, 5,461 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021092736093

## Discrepancy

#1 HF LT BURNED OUT. GROUNDED - YES. REMOVED AND REPLACED HF\SAT PANEL REF B737-900ER AMM 23-15-00. OP TEST GOOD FOR HF AND SAT. AMM 23-11-00 ANDAMM 23-15-00. GROUND VERIFICATION PASSED.

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