# SDR ASAA2015122414452

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2015
- Submitted: December 29, 2015
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 36,680 hours, 10,846 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transmitter
- Condition: Malfunctioned
- Location: Nr 2 Hf Sys
- 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/ASAA2015122414452

## Discrepancy

HF 2 WILL NOT TRANSMIT.  ACFT GROUNDED.  PERFORMED HF SYS BITE TEST REF FIM 23-11, TASK 801.  NO FAULTS FOUND.  SWAPPED HF TRANSMITTERS FROM 1 TO 2 POSITION AND 2 TO 1 POSITION  BOTH HF 1 AND HF 2, OPS TEST NORMAL REF AMM 23-11-21-400-801.  NO HISTORY PAST 30 DAYS. OK FOR SERVICE.

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