# SDR CALA2020051100959

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2020
- Submitted: May 11, 2020
- Operation: Air carrier
- Aircraft: [N17245](https://openairdocs.org/aircraft/N17245), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28955
- Aircraft time: 65,763 hours, 23,597 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 114A24014
- Condition: Cracked
- Location: Fuselage
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2020051100959

## Discrepancy

CENTER WING BOX BS540 LBL 54.60 FRUNT SPAR UPPER SURFACE HORIZONTAL STIFFNER AFT EDGE EVIDENCE OF BEING CRACKED REF AAR N/R 99880823 REMOVED AND REPLACED STIFFNER AT CENTER WING BOX BS540 LBL 54.60 UPPER SPAR AREA PER REF ECRA 5714-01154 AND B737 SRM 51-40-02

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