# SDR SWAA2022041192085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2022
- Submitted: April 11, 2022
- Operation: Air carrier
- Aircraft: [N442WN](https://openairdocs.org/aircraft/N442WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32459
- Aircraft time: 62,373 hours, 36,976 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Doubler
- Condition: Cracked
- Location: Fuselage
- 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/SWAA2022041192085

## Discrepancy

DURING HEFC INSPECTION CRACK INDUCTION AT FIRST RIVET ABOVE LOWER AFT BLEND OUT ON EGPR DOUBLER 'MARKED' / [01] REMOVED DAMAGE IAW SRM 53-10-15-2R-4 SECTION 4.C;[02] HFEC ACCOMPLISHED AT TRIMOUT EDGE AND REMOVED FASTENERS COMMON TO SKIN AND INTERIOR STRUCTURE IAW B737 NDT PART 6; 51-00-00 PROCEDURE 23 AND PROCEDURE 16. NO DEFECTS NOTED. TOOL# 40083 DUE 14SEP22;[03] ACCOMPLISHED 10X VISUAL INSPECTION OF BLENDED ARE AND .040' INSURANCE CUT IAW SRM 53-10-15-2R-4 SECTION 4.C (6) AND (7).<BR>VERIFIED MATERIAL 7075-T6 .050' ATAG A41234 IAW SRM 53-10-15-2R-4 TABLE 201.;[04] VERIFIED STEP 3;[05] FABRICATED; LOCATED AND DRILLED -1 DOUBLER IAW SRM 53-10-15-2R-4 SECTION 4.E-J AND FIGURE 203.;[06] VERIFIED STEP 3 AS RII<BR>VERIFIED STEP 5<BR><BR>OK TO TREAT AND PRIME;[07] APPLIED CHEMICAL CONVERSION AND PRIMER TO -1 DOUBLER AND REPAIR AREA IAW SRM 53-10-15-2R-4 SECTION 4. K AND L.;[08] VERIFIED STEP 7;[09] OK TO INSTALL;[10] INSTALLED -1 REPAIR DOUBLER AND APPLIED TOPCOAT TO EXTERNAL SURFACE IAW SRM 53-10-15-2R-4 SECTION 4. M-N.;[11] REMOVED DAMAGE AND REPAIRED EGPR DOOR DOUBLER AT LOWER AFT CORNER IAW SRM 53-10-15-2R-4.;[12] SEE FAULT TTG8Q00BQH4E FOR WIP;[13] VERIFIED STEPS 10 THRU 12;[14] AUDIT CW

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