# SDR ASAA2022050938218

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2022
- Submitted: May 9, 2022
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 25,109 hours, 7,904 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Coupler
- Part number: 8220987004
- Part serial: 199385
- Condition: Inoperative
- Location: Vertical Fin
- Part time: 25,109 hours, 7,904 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022050938218

## Discrepancy

ASA TECH SERVICE REQUEST. FOLLOW UP TO REPORTS OF #2 HF INOP. GROUNDED - YES. REMOVED AND REPLACED #2 HF COUPLER ANTENNA IAW B737-900 AMM 23-11-61/401. OPERATIONAL TEST GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL.

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