# SDR C77A20170630001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2017
- Submitted: June 30, 2017
- Operation: Air carrier
- Aircraft: N609CZ
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 1700197
- Aircraft time: 26,536 hours, 15,325 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 17032161016
- Condition: Cracked
- Location: Rt Wing
- Part time: 26,536 hours, 15,325 cycles
- 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/C77A20170630001

## Discrepancy

INTERNAL OF RT WING, BETWEEN SPAR II AND SPAR III, A CRACK WAS FOUND AT THE THIRD FASTENER HOLE FROM THE AFT ON THE UPPER FLANGE OF RIB 10, EXTENDING 2 WAYS FROM A FASTENER HOLE. 
THE TOTAL LENGTH OF THE (2) CRACKS IS APPROX. 0.670".  REPAIR MAJOR.  PERFORMED SERVICE BULLETIN 170-57-0047,  REPLACED THE RIB WITH A NEW RIB,

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