# SDR DALA1220036304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2012
- Submitted: April 19, 2012
- Operation: Air carrier
- Aircraft: N664US
- Make and model: Boeing 747451
- Aircraft serial: 23819
- Aircraft time: 94,936 hours, 11,946 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Cracked
- Location: Ws 1423
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA1220036304

## Discrepancy

RT WING INTERSPAR RIB WS 1423 WEB FOUND CRACKED ALONG SEVERAL FASTENERS.  REPAIRED PER SRM 57-20-09 FIG 201.

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