# SDR CKSA97346

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N708CK](https://openairdocs.org/aircraft/N708CK), registered now
- Make and model: Boeing 747269B
- Aircraft serial: 21543
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Cracked
- Location: Ws 670
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CKSA97346

## Discrepancy

DURING C1-12 CHECK INSPECTION, FOUND RT WING STA 670 RIB HAS A CRACK IN UPPER SHEAR TIE ADJACENT TO FRONT SPAR.  REPAIRED CHORD AT STA 670 IAW S/B 747-57-2273 FIG 7 AND 8, (7075-T6).  C-CHECK WORK CARD NUMBER 7CI6001.  NON-ROUTINE TASK CARD NUMBER 108445.

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