# SDR UIEA201000145

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2010
- Submitted: May 5, 2010
- Operation: Air carrier
- Aircraft: N524MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21784
- Aircraft time: 101,810 hours, 21,118 cycles
- Engine: Ge CF650E2
- 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/UIEA201000145

## Discrepancy

THIS EO DOCUMENTS A MAJOR REPAIR. DURING C-CHECK, CORROSION WAS DETECTED COMMON TO RT WING LOWER SKIN WS1285 - WS1320 (REF FIG 1).  THE CORROSION WAS BLENDED OUT IAW THE SRM 51-10-01/02 WITHIN LIMITS IAW SRM 57-30-01 FIGURE 2 (SHEET 7); THE FLANGE WAS BLENDED TO
MINIMUM THICKNESS. REMAINING MATERIAL THICKNESS MEASUREMENT IAW (REF. FIGURE 1).
NOTE: THIS REPAIR IS CLASSIFIED AS: LEVEL 1 CORROSION IAW GMM 5.8.1 (CPCP).PART 1 OF THIS EO ACCOMPLISHES A PERMANENT REPAIR OF THE RT WING LOWER SKIN WS1285 - WS1320 IAW IAI NRC264.

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