# SDR SWAA2023053142056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2023
- Submitted: May 31, 2023
- Operation: Air carrier
- Aircraft: [N570WN](https://openairdocs.org/aircraft/N570WN), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 33657
- Aircraft time: 63,400 hours, 32,540 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Winglet
- Condition: Delaminated
- Location: Zn 500 Left Wing
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023053142056

## Discrepancy

LH WINGLET AFT (CARBON FIBER) SPAR ;SIGNS OF DELAMINATION AND LOOSE FIBERS AT MOST UPPER TOOLING HOLES.<[01] DAMAGE FOUND AT LH WINGLET UPPER SKIN INTERNAL AREA OUTSIDE OF AAR MIAMI REPAIR CAPABILITIES; WINGLET TO BE REPLACED. INSTALL ACCOMPLISHED ON ROUTINE CARD TTG8Q003GNYE AND NR TTG8Q00KPD73. INSTALLED LEFT WINGLET AS PER AMM 57-21-21-400-801 TORQUE WRENCH B/C DUE DATE 01-DEC-23 NOTE FOR OPERATIONAL CHECK OF THE STEADY POSITION LIGHTS AND STROBE POSITION LIGHTS WILL BE ACCOMPLISHED ON CARD TTG8Q003GNYE.;[02] VERIFIED ALL STEPS

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