# SDR SWAA2023042026202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2023
- Submitted: April 20, 2023
- Operation: Air carrier
- Aircraft: [N240WN](https://openairdocs.org/aircraft/N240WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32503
- Aircraft time: 56,457 hours, 33,866 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Angle
- Condition: Cracked
- Location: Zn 100 Fus Lower
- 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/SWAA2023042026202

## Discrepancy

DOT A24-15 LH LOWER STATION 663 ANGLE; COMMON TO LOWER CENTER FUEL TANK; IS CRACKED NEAR LBL 48. MARKED<[01] DURING LOCATE AND DRILL OF -1 AND -2 ANGLES. MISS DRILLED WRONG SIDE OF TEMPLATE NO DAMAGE TO AIRCRAFT;[02] VERIFIED STEP 1;[03] HFEC IAW B737 NDT PART 6; 51-00-00 PROC 16. NO DEFECTS NOTED. TOOL#31823; DUE 03JAN24.;[04] ACCOMPLISHED 40 THOUSANDS INSURANCE CUT . TREATED AND PRIMED CUT AREA ALL IAW SRM 57-10-10-2R-5;[05] VERIFIED ITEM 4;[06] APPLIED FILLET SEAL AND CAP SEAL FASTENERS I/A/W AMM 51-31-00-390-801 AND 51-31-00-390-805;[07] VERIFIED ITEM 6;[08] VERIFIED ALL STEPS ARE COMPLETE;[09] VERIFIED ITEM 8<BR>AUDIT C/W

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