# SDR CALA2026052616546

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2026
- Submitted: May 27, 2026
- Operation: Air carrier
- Aircraft: [N37290](https://openairdocs.org/aircraft/N37290), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31601
- Aircraft time: 67,161 hours, 25,088 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Pressure Web
- Part number: 111A11011
- 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/CALA2026052616546

## Discrepancy

CENTER WING REAR SPAR VERTICAL PRESSURE WEB BETWEEN WL192.0 AND WL 200.6, 01 CRACK BETWEEN RBL 39.83/RBL 40.00 AND 01 CRACK BETWEEN RBL 40.00/RBL 45.64. (REF AAR NR 1000073212).ACCOMPLISH THE REPAIR OF THE WING CENTER SECTION REAR SPAR VERTICAL PRESSURE WEB IAW ECRA # 5710-02974.THE REPAIR ACCOMPLISHED IN PART 1 IS A CATEGORY B REPAIR REQUIRING REPETITIVE INSPECTION REQUIREMENTS (RIR) STATED IN PART 2.  AFTER THE ACCUMULATION OF 80,900 TOTAL ACFT FLT CYCLES, BUT BEFORE 81,000 TOTAL ACFT FLIGHT CYCLES, AND AT INTERVALS NOT TO EXCEED 36,000 FLIGHT CYCLES THEREAFTER, PERFORM ANINSPECTION OF THE WING CENTER SECTION REAR SPAR VERTICAL PRESSURE WEB REPAIR ON AIRCRAFTN37290 IN ACCORDANCE WITH PART 2 OF THE LATEST REVISION OF ECRA 5710-02974?. REPAIR COMPLETED. ADD EMP:V952045 TOMC APPROVED DIP CARRY. WING CTR SECT REAR SPAR VERT PRESS WEB PNL ASSY AND ATTACH ANGLE WERE FOUND CRACKED. PERFORMED INTERIM REPAIR PER PART 1.

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