# SDR CALA2026090119154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2026
- Submitted: September 1, 2026
- Operation: Air carrier
- Aircraft: [N78438](https://openairdocs.org/aircraft/N78438), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33533
- Aircraft time: 53,319 hours, 19,198 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Pressure Blkhd
- Part number: 111A1101
- 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/CALA2026090119154

## Discrepancy

VERTICAL PRESSURE WEB BETWEEN WL 192.2 AND WL 200.6, 01 CRACK BETWEEN RBL 25.00/RBL 31.83, AND 01 CRACK BETWEEN RBL 40.00/RBL 45.64.  REPAIRED 2 EA DAMAGE CRACKS  IAW SRM 57-10-10-2R-3, ALTERNATIVE 3,

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