# SDR SWAA2023062054139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2023
- Submitted: June 20, 2023
- Operation: Air carrier
- Aircraft: N418WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29823
- Aircraft time: 71,436 hours, 42,247 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 200 Fus Top
- 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/SWAA2023062054139

## Discrepancy

CRACK STIFFENER ASSY LOCATED BS540 BETWEEN BL 0 TO RBL 24.75 AT PASSENGER CABIN 2023-361018<[01] REPLACED STIFFENER ASSY LOCATED BS540 BETWEEN BL 0 TO RBL 24.75 AT PASSENGER CABIN IAW B737-700 SRM 51-40-02 AND SRM 51-10-02 DWG 143A0060 SHEET 36 REV A;[02] CORRECTED STEP 1. <BR>REPLACED STIFFENER ASSY LOCATED BS540 BETWEEN BL 0 TO RBL 24.75 AT PASSENGER CABIN IAW B737-700 SRM 51-40-02 AND SRM 51-10-02 DWG 143A0060 SHEET 36 REV A SEE INDIVIDUAL SIGN OFF BELOW.;[03] REPLACED STIFFENER ASSY LOCATED BS540 BETWEEN BL 0 TO RBL 24.75 AT PASSENGER CABIN IAW B737-700 SRM 51-40-02 AND SRM 51-10-02 DWG 143A0060 SHEET 36 REV A; RII. SEE INDIVIDUAL SIGN OFF BELOW.

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