# SDR SWAA071861

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2007
- Submitted: April 18, 2007
- Operation: Air carrier
- Aircraft: [N676SW](https://openairdocs.org/aircraft/N676SW), registered now
- Make and model: Boeing 737-3A4
- Registry model: [Boeing 737-3A4](https://openairdocs.org/model/boeing-737-3a4) (OpenAirDocs)
- Aircraft serial: 23288
- Aircraft time: 67,107 hours, 55,998 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Duct
- Part number: 212A2410
- Condition: Crushed
- Location: Fuselage
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA071861

## Discrepancy

AT FL 240, CABIN ALT HORN SOUNDED, ALT CLIMBED TO 15,000 FT AND MASKS DEPLOYED.  FOUND AFT PRESSURE BULKHEAD APU PNEUMATIC DUCT CRUSHED.  REMOVED AND REPLACED AFT PRESSURE BULKHEAD APU PNEUMATIC DUCT PER MM.

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