# SDR IPXA2026031284304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2026
- Submitted: March 12, 2026
- Operation: Air carrier
- Aircraft: [N384UP](https://openairdocs.org/aircraft/N384UP), registered now
- Make and model: Boeing 767-300
- Registry model: [Boeing 767-300](https://openairdocs.org/model/boeing-767-300) (OpenAirDocs)
- Aircraft serial: 67973
- Aircraft time: 3,927 hours, 1,724 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transmitter
- Part number: 8220990004
- Part serial: 4TM9FN
- Condition: Inoperative
- Location: Zone 100
- 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/IPXA2026031284304

## Discrepancy

ATB, UNABLE TO RECEIVE HF RADIO TRANSMISSIONS ON EVERY HF FREQ WE COULD FIND. CONTACTED DISPATCH, ATB REQUIRED. PRIOR TO DEPT HF CHECK WITH OTHER ARCFT SUCCESSFUL ON BOTH HF RADIOS. HF LT.   T/S LT HF SYS, FOUND HF TRANSCEIVER STUCK ON 10MHZ AND FREQUENCY WOULD NOT CHANGE WHILE USING CONTROL PANEL, ALSO OBSERVED SQUELCH FUNCTION INOP, REPLACED LEFT HF TRANSCEIVER PER B767 AMM 23-11-03, OPS TEST IN MANUAL CHECKS GOOD, PERFORMED ADDITIONAL OPS TEST AS FOLLOWS; VERIFIED SIDETONE/MONITOR FUNCTION PRESENT, VERIFIED TUNING FUNCTION IS GOOD, AND MADE 2 CONTACT WITH STATIONS IN FLORIDA AND PENNSYLVANIA  WITH 5/5 SIGNAL REPORTS, ALSO RECEIVED THEM AT A 5/5 SIGNAL, ALL CHECKS ARE GOOD, THIS CLEARS MEL, PLACARD REMOVED.

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