# SDR UPS04442000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2004
- Submitted: March 8, 2004
- Operation: Air carrier
- Aircraft: N680UP
- Make and model: Boeing 747-SR-46
- Registry model: [Boeing 747-SR-46](https://openairdocs.org/model/boeing-747-sr-46) (OpenAirDocs)
- Aircraft serial: 20923
- Aircraft time: 66,233 hours, 33,562 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: 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/UPS04442000

## Discrepancy

INSPECTION TYPE:C BS 1241 WING REAR SPAR LEFT UPPER CHORD FOUND CORROSION AT HOLE NR 9 APPROX  0.030 INCH DEPTH.  BS 1241 WING REAR SPAR LEFT UPPER CHORD BOLT HOLE NR 9 CORROSION REMOVED NDT INSPECTED RESULT CORROSION FREE.  BOLT HOLE BUSHING REPAIRED AS PER EO B747-5740-17032-A APPENDIX -E-.  SEPARATE BUSHING INSTALLED IN INTERNAL SPLICE FITTING AND UPPER CHORD.

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