# SDR SWAA2023070756447

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2023
- Submitted: July 7, 2023
- Operation: Air carrier
- Aircraft: [N8302F](https://openairdocs.org/aircraft/N8302F), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36680
- Aircraft time: 36,881 hours, 16,672 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Stiffener
- 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/SWAA2023070756447

## Discrepancy

LOWER FUSELAGE CENTER WING BOX VERTICAL BULKHEAD VAPOR BARRIER STIFFENER CRACKED @ LOWER RADIUS O/B OF A/C AIR EXIT EXHAUST DUCT STA 663.75 MKD DOT CORRECTION AT L/H SIDE<[01] REMOVED AND REPLACED STIFFENER @ LOWER FUSELAGE CENTER WING BOX VERTICAL BULKHEAD VAPOR BARRIER O/B OF A/C EXIT EXHAUST DUCT STA. 663.75 PER B737-800 SRM 51-40-05-0G-0 AND BOEING DRAWING NO. 111A1000;[02] VERIFIED STIFFENER REPLACEMENT B.S. 663.75 O/B OF A/C EXHAUST DUCT LEFT SIDE.

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