# SDR UIEA201000156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2010
- Submitted: May 11, 2010
- Operation: Air carrier
- Aircraft: [N498MC](https://openairdocs.org/aircraft/N498MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 25259
- Aircraft time: 43,275 hours, 6,484 cycles
- Engine: Ge CF680C2B1F
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Condition: Delaminated
- Location: Nacelle
- 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/UIEA201000156

## Discrepancy

DURING MX WALKAROUND, THE NR4 LT FAN COWL INNER AND OUTER SKINS WERE FOUND WITH DELAMINATION. EO: 4471A055 - PART 1 - TIME LIMITED REPAIR THE PART 1 TIME LIMITED REPAIR INSTALLS THROUGH BOLTS TO RESTORE THE CAPABILITY OF THE DISBONDED AREA AND IS FAA APPROVED IAW THE FAA FORM 8110-3 DATED 10MAY2010.  THE PART 2 INSP IAW THIS EO ENSURES THE CONTINUED AIRWORTHINESS OF THE PART 1 TIME LIMITED REPAIR. THE PART 3 PERMANENT REPAIR RESTORES THE SUBJECT COWL TO THE ORIGINAL DESIGN CONFIGURATION.

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