# SDR DALA1164245653

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2011
- Submitted: November 22, 2011
- Operation: Air carrier
- Aircraft: [N553NW](https://openairdocs.org/aircraft/N553NW), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26500
- Aircraft time: 4,111 hours, 2,134 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Condition: Damaged
- Location: Lt Wing
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA1164245653

## Discrepancy

ER/A 497012-14 FOR LT LOWER WING SKIN DAMAGE, WSTA 205 AND S-L10.  THE LARGEST AREA OF DAMAGE RESULTED IN DEEP GOUGING & DENTING OF THE SKIN AND STRINGER L-11 CENTERED AROUND WSTA  205.  STRINGER L-11 WAS ALSO BADLY DEFORMED.  DAMAGE TOLERANCE ANALYSIS IS REQUIRED IN ACCORDANCE WITH PROCEDURES ESTABLISHED BY FAA ADVISORY CIRCULAR 120-93.  REPAIR APPROVAL IS LIMITED TO 12 MONTHS SERVICE ONLY.

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