# SDR UIEA2015120900703

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2015
- Submitted: December 10, 2015
- Operation: Air carrier
- Aircraft: [N780BA](https://openairdocs.org/aircraft/N780BA), registered now
- Make and model: Boeing 747409
- Aircraft serial: 24310
- Aircraft time: 76,891 hours, 14,922 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Condition: Corroded
- 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/UIEA2015120900703

## Discrepancy

REPAIR CORROSION ON THE WING INTER SPAR LOWER SKIN, PANEL NR 3, LOWER SIDE NEAR FSS 1305.  BLENDED OUT THE DAMAGED AREA, MEASURED & REWORKED.  THE DEEPEST THICKNESS WAS 0.216 INCHES, WHICH WAS NOT ALLOWABLE IAW SRM 57-20-01, ALLOWABLE DAMAGES FIG 101 CHART I REV 32.  DETAIL DATA REF TO IC ATTACHING SHEET NR 0069558 & NRC DATA SHEET CONTROL NR 050079 & CONTACT PE TO DO FURTHER ACTIONS.  PEM EI NR T2015 57B-2573 REV 1 JOB COMPLETED & CONDITION CHECKED NORMAL.

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