# SDR ASAA2019112171355

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2019
- Submitted: November 27, 2019
- Operation: Air carrier
- Aircraft: [N467AS](https://openairdocs.org/aircraft/N467AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 21,315 hours, 7,014 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Coupling
- Part number: 8220987004
- Condition: Faulted
- Location: Nr 2 Hf Antenna
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019112171355

## Discrepancy

DURING MAINTENANCE VERIFICATION IN-FLIGHT PILOT TEST, RADIO HF #2 WOULD NOT TRANSMIT. GROUNDED - YES. REMOVED AND REPLACED HF ANTENNA #2 COUPLER REF B737-900 AMM 23-11-61-000-801/400-801. PERFORMED INSTALLATION TEST REF AMM 23-11-61-800-001. ALL TESTS PASSED. PERFORMED HF SYSTEM TEST REF AMM 23-11-00-730-801 ALL TESTS PASSED. GROUND VERIFICATION TESTS GOOD. VERIFIED ABLE TO TRANSMIT AND RECEIVE. THIS MTX ACTION CLEARS MEL 23-11A.

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