# SDR CALA2026082718970

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2026
- Submitted: August 27, 2026
- Operation: Air carrier
- Aircraft: [N37255](https://openairdocs.org/aircraft/N37255), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30610
- Aircraft time: 78,111 hours, 29,348 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Pressure Blkhd
- Part number: 111A11111
- Condition: Cracked
- Location: Zone 100
- 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/CALA2026082718970

## Discrepancy

SUPPORT TASK:  2EA CRACKS FOUND ON RH CENTER WING BOX REAR SPAR VERTICAL PRESSURE WEB AT THE RBL 31.83 TO 40.00 BAY AND RBL 40.00 TO 45.64 BAY.TRANSCRIBED FROM AAR GSO NRC 9288075 COMPLETED ESFR THIS IS A CATEGORY B REPAIR AND REQUIRES A HIGH FREQUENCY EDDY CURRENT INSPECTION. PER SRM 57-10-10-2R-3 REPAIR 3 TABLE 205 ADD EMP:V951370 REQUIRES INSPECTION AT 56000 FC POST REPAIR AND 36000 FC THEREAFTER. TOMC APPROVES DIP FOR ALTERNATIVE 2 WEB REPAIR AT RT CENTER WING BOX REAR SPAR VERTICAL PRESSURE WEB AT THE RBL 31.83 TO 40.00 BAY AND RBL 40.00 TO 45.64 BAY.

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