# SDR CALA2019062401061

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2019
- Submitted: June 24, 2019
- Operation: Air carrier
- Aircraft: [N33284](https://openairdocs.org/aircraft/N33284), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31635
- Aircraft time: 50,807 hours, 17,993 cycles
- System (JASC): [2397 · Communications System Wiring](https://openairdocs.org/jasc/2397)
- Part: Coupler
- Part number: 8220987004
- Condition: Inoperative
- Location: Hf Comms
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2019062401061

## Discrepancy

HF RADIOS WOULD NOT TRANSMIT.  RESET CB HF1 HF2 STILL INOPERATIVE.   REMOVED AND REPLACED LEFT AND RIGHT HF COUPLERS IAW AMM 23-11-61 -400-801 UPTO STEP H.12,  INSTALLATION TESTED IAW  23-11-61-400-801. HF1 AND HF2 SYSTEMS OPS CHECKED NORMAL.

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