# SDR CALA2026070817608

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 6, 2026
- Submitted: July 8, 2026
- Operation: Air carrier
- Aircraft: [N62849](https://openairdocs.org/aircraft/N62849), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 42204
- Aircraft time: 35,364 hours, 13,081 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Drive Unit
- Part number: 6225135802
- Part serial: 8570
- Condition: Faulted
- Location: Zone 100
- Part time: 35,355 hours, 13,078 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026070817608

## Discrepancy

IAW FLIGHT CREW, VIBRATION IN AIR & ON GROUND FELT IN FLT DECK & FELT IN FLIGHT CONTROLS.  AIR RETURN, CREW REPORTED WXR RADAR FAIL ANT/PWS FAIL IN CONJUCTION WITH VIBRATIONS, ON TROUBLESHOOTING,  WXR FAIL & PULLING WEATHER RADAR RT CB VIBRATIONS STOPPED IN FLIGHT DECK. CREW REPORTED WXR RADAR FAIL ANT/PWS FAIL IN CONJUCTION WITH THE VIBRATIONS.  REMOVED AND REPLACED WXR ANTENNA DRIVE UNIT IAW AMM 34-43-11-400-802, OPS CHKD GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.