# SDR CALA2020011300134

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2020
- Submitted: January 13, 2020
- Operation: Air carrier
- Aircraft: [N24729](https://openairdocs.org/aircraft/N24729), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28945
- Aircraft time: 66,834 hours, 23,476 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 111A240142
- 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/CALA2020011300134

## Discrepancy

B737-57-3-0650 CENTER WING BOX STA 540 CABIN STIFFENER AT LBL 15.04 CRACKED. REF BY PEMCO NRS 2664N527. REMOVED AND REPLACED FITTING CENTER WING BOX STA 540 AT LBL 15.0 4 IAW B737-700 SRM 51-40-02. WORK PERFORMED, ENTERED

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