# SDR CALA2025043004326

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2025
- Submitted: April 30, 2025
- Operation: Air carrier
- Aircraft: [N76533](https://openairdocs.org/aircraft/N76533), registered now
- Make and model: Boeing 737824
- Aircraft serial: 62748FAL
- Aircraft time: 28,252 hours, 10,317 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Web
- Part number: 147A57102
- Part serial: NA
- Condition: Corroded
- Location: Sta990
- 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/CALA2025043004326

## Discrepancy

MAIN CABIN PRESSURE DECK WEB 'Z' ANGLE AT STA 990 AND RBL 41 HAS SIGNS OF CORROSION.   REMOVED DAMAGE, ORIG .050 REF BAC1509-100505 REV-. MATERIAL LOSS .040, REMAINING .010 FOUND OUT OF LIMITS REF B737-800 SRM 53-70 -51-1A-1 FIG 104 DETAIL C. REMOVED, LOCATED, DRILLED AND INSTALL ED NEW 'Z' ANGLE REF B737-800 SRM 51-40-02 AND BAC DWG 147A5700 REV B. NO FURTHER ACTION REQUIRED.

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