# SDR DALA2026102205823

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2026
- Submitted: October 22, 2026
- Operation: Air carrier
- Aircraft: [N938DZ](https://openairdocs.org/aircraft/N938DZ), registered now
- Make and model: Boeing 737-9GPER
- Registry model: [Boeing 737-9GPER](https://openairdocs.org/model/boeing-737-9gper) (OpenAirDocs)
- Aircraft serial: 37291
- Aircraft time: 33,157 hours, 20,674 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shear Web
- Condition: Corroded
- Location: Zone 200
- 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/DALA2026102205823

## Discrepancy

MULTIPLE SPOTS OF CORROSION FOUND UNDER CABIN FLOOR PANEL.   FOUND CORROSION ON SHEAR WEB ASSEMBLIES, NO ALLOWABLE DAMAGE FOR SHEAR WEB FLOOR STRUCTURE PER SRM 53-71-11-01A. RECEIVED NEW SHEAR WEBS AND SUPPORT ANGLES (FABRICATED BY CUSTOMER ON P.O. XF8209. LOCATED, DRILLED AND ASSEMBLED REPLACEMENT SHEAR WEBS TO MAKE REPLACEMENT SHEAR WEB ASSEMBLIES. INSTALLED SHEAR WEB ASSEMBLIES AT BS 1030-1041 RBL31 - LBL 31 WL 208 (UNDER CABIN FLOOR PANEL P/N 147A5810-421. ALL WORK PER SRM 51-40-02-0G AND BOEING DWG 147A5701 SHT 21. (1878775) AIRCRAFT WAS GROUNDED

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