# SDR UIEA2019070504679

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2019
- Submitted: July 5, 2019
- Operation: Air carrier
- Aircraft: [N856GT](https://openairdocs.org/aircraft/N856GT), registered now
- Make and model: Boeing 747-87UF
- Registry model: [Boeing 747-87UF](https://openairdocs.org/model/boeing-747-87uf) (OpenAirDocs)
- Aircraft serial: 37561
- Aircraft time: 31,964 hours, 5,370 cycles
- System (JASC): [5751 · Ailerons](https://openairdocs.org/jasc/5751)
- Part: Aileron
- Condition: Delaminated
- Location: Lt Aileron
- 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/UIEA2019070504679

## Discrepancy

FOUND LT WING OTBD AILERON DELAMINATION.  (<P>CUT OUT THE DELAMINATION MATERIAL AND CLEANED. MEASURED THE DAMAGED AREA (L = 2", W = 0.7", D = 4 PLIES 0), (FROM AFT EDGE .69 FROM INBD EDGE, WBL 918), BOND PLIES (L = 8", W = 5"). USED WET LAYUP WITH RESIN, CURED AT 200 DEG F FOR 240 MINUTES AND MAINTAINED MINIMUM VACUUM PRESSURE AT 32 IN/HG IAW SRM 57-60-01-2R-2. REFER TO SRM 51-70-04-2R-0 REV. 27. MADE AN ENTRY OF REWORK MOMENT ON THE ALUMINUM FOIL MOMENT MARKER. IAW SRM 51-60-01-0G-0 REV. 27, CHECK CONDITION WAS SATISFACTORY.</P>)

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