# SDR UPS06448691

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2006
- Submitted: November 22, 2006
- Operation: Air carrier
- Aircraft: N677UP
- Make and model: Boeing 747123F
- Aircraft serial: 20391
- Aircraft time: 97,105 hours, 24,042 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Rt Wing
- 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/UPS06448691

## Discrepancy

INSPECTION TYPE:C RIGHT WING REAR SPAR UPPER CHORD FOUND CORRODED AT WS 400 W/W AREA.  CORROSION BLEND OUT 0.420" X 3" X 6" EXCEED SRM 57-10-01 FIG 1 LIMITS.  RIGHT WING REAR SPAR UPPER CHORD AT WS 400 AREA REPAIRED AS PER HX RS R57-22-35684 AND UPS EO B747-5710-25565.

---
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.