# SDR AALA202508130775

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2025
- Submitted: August 13, 2025
- Operation: Air carrier
- Aircraft: [N879BH](https://openairdocs.org/aircraft/N879BH), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 65999
- Aircraft time: 12,252 hours, 1,634 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Drive Assy
- Part number: 8222131003
- Part serial: 4NVFP
- Condition: Faulty
- Location: Zone 100
- 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/AALA202508130775

## Discrepancy

AIRCRAFT WAS GROUNDED: GRINDING NOISE HEARD FROM RADOME AREA FOLLOWED BY WEATHER RADARSYS L+R FAULT. DECESION MADE TO RETURN TO PHL, EMERGENCY DECLARED AND AIRCRAFT LANDED OVERWEIGHT WITHOUT INCIDENT. MAINTENANCE NEW RADAR DRIVE UNIT INSTALLED PER AMM B787-A-34-42-03-00A-720-A.

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