# SDR SWAA2023022700895

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2023
- Submitted: February 27, 2023
- Operation: Air carrier
- Aircraft: N408WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27895
- Aircraft time: 71,794 hours, 42,650 cycles
- System (JASC): [5720 · Wing Miscellaneous Structure](https://openairdocs.org/jasc/5720)
- Part: Beam
- Condition: Corroded
- Location: Zn 600 Right Win
- 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/SWAA2023022700895

## Discrepancy

CORROSION. RIGHT WING T/E; PANELS SUPPORT BETWEEN W/S 485 TO 302; EVIDENCE CORROSION AROUND FASTENER HOLE.<[01] REMOVED NUT PLATES TO GAIN ACCESS TO CORROSION AS PER B 737 SRM 51-40-02-0G-0;[02] REMOVED CORROSION AT RIGHT WING T/E AT PANEL SUPPORT BETWEEN W/S 485 TO 302 AS PER B 737 SRM 51-10-02-0G-0;[03] VALIDATED STEPS 1 & 2;[04] PART REWORKED HAS EXFOLIATED CORROSION FOUND TO BE OUT OF LIMITS AS PER B737-700 SRM 57-51-02-1A-1 FIG 108 DETAIL A;B;C;AND D;[05] VALIDATED STEP 4;[06] LOCATED AND DRILLED NEW SUPPORT BEAM AS PER B 737 51-40-05-0G-0;[07] VALIDATED STEP 6<BR><BR><BR>OK TO INSTALL NEW ASSY.;[08] INSTALLED NEW RIGHT WING T/E; PANELS SUPPORT BETWEEN W/S 485 TO 302 AS PER B737-700 SRM 51-40-02-0G-0;[09] VALIDATED STEP 8

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