# SDR SWAA2023101202740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2023
- Submitted: October 12, 2023
- Operation: Air carrier
- Aircraft: N421LV
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32452
- Aircraft time: 71,597 hours, 42,416 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Vapor Barrier
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 100 Fus Lower
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023101202740

## Discrepancy

CRACKED LOWER L/H COMPOSITE BULKHEAD AT BS663 LBL33 WL163.<[01] REMOVED VAPOR BARRIER AND INSTALLED NEW VAPOR BARRIER AS PER SRM 51-40-02 AND D DWG 111A7000; DWG 111A1151; DWG 111A1001 AND DWG 111A1000.;[02] VERIFIED.<BR>VERIFIED MEASUREMENTS.

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