# SDR IPXA1B66715

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2011
- Submitted: May 20, 2011
- Operation: Air carrier
- Aircraft: [N582UP](https://openairdocs.org/aircraft/N582UP), registered now
- Make and model: Boeing 747-4R7F
- Registry model: [Boeing 747-4R7F](https://openairdocs.org/model/boeing-747-4r7f) (OpenAirDocs)
- Aircraft serial: 29053
- Aircraft time: 70,234 hours, 12,978 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Rib
- Condition: Corroded
- Location: Bs 1170 Bl 0
- 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/IPXA1B66715

## Discrepancy

INSPECTION TYPE:D, FX STA 1120, BL 0 KEEL BEAM PANEL SUPPORT RIB FOUND CORRODED.  CORROSION REMOVED & REPROTECTED IAW SRM 51-10-02 AND 51-20-01 REV 5 59.  ORG THK 0.100".   BLEND DEPTH 0.006" X WIDTH 1", LENGTH 2" WITHIN SRM 53-00-71 ALLOWABLE DAMAGE 1, FIG 101, REV 59 LIMITATION.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.