# SDR SWAA2022111660709

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2022
- Submitted: November 16, 2022
- Operation: Air carrier
- Aircraft: [N207WN](https://openairdocs.org/aircraft/N207WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34012
- Aircraft time: 56,256 hours, 33,707 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Door Sill
- Condition: Corroded
- Location: Bs 294-328
- 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/SWAA2022111660709

## Discrepancy

CORROSION @ R-1 DOOR LOWER SILL INNER CHORD FROM STA 294.5 TO STA 328 MKD DOT / [01] REMOVED CORROSION AT R1 DOOR LOWER SILL INNER CHORD;STA 294.5 TO STA 328.PER B 737-700 SRM 51-10-02-0G-0.;[02] VERIFIED STEP #1;[03] PERFORMED UT THICKNESS ON REWORKED AREA AS PER NDTM PART 4; 51-00-00 PROCEDURE 3. MINIMUM FOUND:0.079'<BR>[OLYMPUS 27MG; B/C 172139; CALIB.DUE-4/23];[04] AFTER NDT CHECK;FOUND REWORKED AREA WHITING LIMITS PER B 737-700 SRM 53-10-15-1A-2.ORIGINAL THICKNESS .080'' MATERIAL REMOVED .001''MATERIAL REMAINING .079'';[05] VERIFIED STEP #1.<BR>OK TO APPLY ALODINE AND PRIMER.;[06] TREATED AND PRIMED REWORKED AREA;PER B 737-700 SRM 51-20-01-0G-0;AND AMM 51-21-72-370;[07] VERIFIED STEP #6.;[08] COMPLIED WITH TASK INSTRUCTIONS; REWORKED AREA IN LIMITS.

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