# SDR JJBA20210922018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2021
- Submitted: September 22, 2021
- Operation: Air carrier
- Aircraft: [N13124](https://openairdocs.org/aircraft/N13124), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 145689
- Aircraft time: 44,605 hours, 28,232 cycles
- System (JASC): [3443 · Doppler System](https://openairdocs.org/jasc/3443)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JJBA20210922018

## Discrepancy

AFTER REMOVAL OF UPPER TCAS ANTENNA, INSPECTED AIRCRAFT SKIN FOUND SEVERAL SCRATCHES AT MATING SURFACE. REMOVED SCRATCHES ON UPPER TCAS ATTENNA DOUBLER BY BLENDING, MATERIAL LOSS FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED UPPER TCAS ANTENNA DOUBLER

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