# SDR CALA2020020200295

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2020
- Submitted: February 2, 2020
- Operation: Air carrier
- Aircraft: [N75436](https://openairdocs.org/aircraft/N75436), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33531
- Aircraft time: 35,612 hours, 12,342 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Pressure Blkhd
- Part number: 111A1111
- Condition: Cracked
- Location: Bs 663
- 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/CALA2020020200295

## Discrepancy

R/H CENTER WING REAR SPAR VERTICAL PRESSURE WEB HAS APPROX 25" CRACK AT RBL42 R/H VERTICAL PRESS WEB HAS BEEN REPAIRED IAW SRM 57-10-10 REP 3 ALT 2 INSP THRESHOLD AT 56000 FLT CYCS AFTER REPAIR FOLLOWED BYREPEAT INSPS AT EACH SUBSEQUENT 36000 FLT CYCS PER TABLE 205 R/H VERTICAL PRESS WEB HAS BEEN REPAIRED IAW SRM 57-10-10 REP 3 ALT 2 INSP THRESHOLD AT 56000 FLT CYCS AFTER REPAIR FOLLOWED BYREPEAT INSPS AT EACH SUBSEQUENT 36000 FLT CYCS.

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