# SDR CALA2026070917641

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 6, 2026
- Submitted: July 9, 2026
- Operation: Air carrier
- Aircraft: [N14548](https://openairdocs.org/aircraft/N14548), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 12701
- Aircraft time: 2,389 hours, 901 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Transceiver
- Part number: 9302000021
- Part serial: 4498
- Condition: Faulted
- Location: Wx Radar
- Part time: 165 hours, 60 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026070917641

## Discrepancy

RED WXR R/T ON BOTH ND WXR HAS FAILD PERFORMED GND SCAN AND BITE TEST FOR WXR. BOTH TESTS FAILED WITH FAULT MSGS WXR RP(1SQ1) AND WXR RTU(13SQ1). TSD SHOWS LAST 4 DIGITS OF 0BF1, 13BB AND 0BE9 FOR 3 RECENT HITS. SUSPECT BAD XCVR(1SQ1) OR XMTR/RCVR(13SQ1) PER TSM 34-41-00-810-802-A. REMOVED AND REPLACED WXR TRANSCEIVER REF AMM 34-41-33. BITE TEST FAILED. STILL FAULTING WXR1 RP (1SQ1) AND WXR1 RTU (13SQ1NEED VARNISH PER AMM 34-41-11-400-014-A, R & R WXR DRIVE AND TEST FAILED IAW AMM 34-41-11-400-014-A. AWAITING VARISH TO APPLY STEP 10. SEE PICS ON FAULT CODES, REF AMM 34-41-00-740-002-A.   FAULT MESSAGE SHOW 0BE9. CHECKED FOR CONTINUITY BETWEEN WXR TRANSCEIVER 1 (1SQ1) PIN AA/2T TO WXR TRANSMITTER/RECEIVER 1 (13SQ1) PIN A/W. CHECKED GOOD.  COMPLETED APPLING VARNISH REF AMM 34-41-11-400-014-A. R&R WEATHER RADAR TRANSMITTER/RECEIVER

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