# SDR ASAA2013033094730

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2013
- Submitted: May 10, 2013
- Operation: Air carrier
- Aircraft: N764AS
- Make and model: Boeing 737-4Q8
- Registry model: [Boeing 737-4Q8](https://openairdocs.org/model/boeing-737-4q8) (OpenAirDocs)
- Aircraft serial: 25101
- Aircraft time: 63,614 hours, 40,242 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 654544556
- Condition: Cracked
- Location: Rt Wing
- 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/ASAA2013033094730

## Discrepancy

DURING INSPECTION, FOUND LOWER RIB ATTACH FITTING AT RT WING RIB NR 4 WBL 135.5 BETWEEN STRINGERS 4 AND 4 TO BE CRACKED AT AFT RADIUS.  ACFT GROUNDED.  REPAIRED CRACKED LOWER RIB CHORD IAW EA 400 57, EA 10305.

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