# SDR SWAA2023062954982

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 2023
- Submitted: June 29, 2023
- Operation: Air carrier
- Aircraft: [N960WN](https://openairdocs.org/aircraft/N960WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36675
- Aircraft time: 38,108 hours, 23,248 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Part number: UNKNOWN
- 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/SWAA2023062954982

## Discrepancy

CRACKED INTERCOSTAL AT PASSENGER CABIN BS500D+6 BL0 WL208.<[01] REMOVED PASSENGER CABIN UPPER ANGLE INTERCOSTAL FROM BS500D - BS420; BL 0; PER SRM 51-40-02-0G-0.<BR>RECEIVED FROM TOOL ROOM NEW INTERCOSTAL UPPER ANGLE P/N 143A5410-170; LOCATED AND DRILL PER SRM 51-40-05-0G-0 AND BOEING DWG. 143A5400; OK TO INSTALL NEW ANGLE.;[02] UPON FURTHER INVESTIGATION FOUND CRACK TO BE IN UPPER ANGLE INTERCOSTAL.<BR>REMOVED PASSENGER CABIN UPPER ANGLE INTERCOSTAL FROM BS500D - BS420; BL 0; PER SRM 51-40-02-0G-0.<BR>RECEIVED FROM TOOL ROOM NEW INTERCOSTAL UPPER ANGLE P/N 143A5410-170; LOCATED AND DRILL PER SRM 51-40-05-0G-0 AND BOEING DWG. 143A5400; OK TO INSTALL NEW ANGLE.;[03] VERIFIED CORRETIVE ACTION STEPS 1&2; OK TO INSTALL GIVEN;[04] CORRECTIVE ACTION ON STEP 2. REMOVED PASSENGER CABIN UPPER ANGLE INTERCOSTAL FROM BS500D - BS520; BL 0; WL208 PER SRM 51-40-02-0G-0.;[05] INSTALLED PASSENGER CABIN UPPER ANGLE INTERCOSTAL FROM BS500D - BS520; BL 0; WL208 PER SRM 51-40-02-0G-0 AND BOEING DWG. 143A5400.;[06] VERIFIED CORRECTIVE ACTION 5.

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