# SDR AALA201905069020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2019
- Submitted: May 9, 2019
- Operation: Air carrier
- Aircraft: [N951AA](https://openairdocs.org/aircraft/N951AA), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29538
- Aircraft time: 54,993 hours, 22,531 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Malfunctioned
- Location: Hf Comm
- 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/AALA201905069020

## Discrepancy

AIRCRAFT NOT GROUNDED: PILOT REPORTS AFTER TUNING THE BOTH NR 1 AND NR 2 HF RADIOS, AND CALLING SFO, UNABLE TO RESPOND/ANSWER CELL CALL BACK TO AIRCRAFT ATC WEAK, OR UNREADABLE. TRIED SEVERAL FREQS ON BOTH RADIOS. MAINTENANCE ACCOMPLISHED HF BITE TEST. BITE TEST PASSED IAW AMM 23-11-00. ACCOMPLISHED BOTH HF SYSTEMS. OPS CHECK NORMAL IAW AMM 23-11-00-710-801. NO 30 DAY HISTORY.

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