# SDR USAA2012102200010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2012
- Submitted: October 22, 2012
- Operation: Air carrier
- Aircraft: [N433US](https://openairdocs.org/aircraft/N433US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24555
- Aircraft time: 60,852 hours, 40,552 cycles
- System (JASC): [2620 · Extinguishing System](https://openairdocs.org/jasc/2620)
- Part: Module
- Part number: 6937307145
- Part serial: D00469
- Condition: Inoperative
- Location: Nr 2 Engine
- Part time: 65,329 hours, 47,064 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012102200010

## Discrepancy

ON POST FLIGHT WALK AROUND 2 LOUD POPPING NOISES AND SMOKE SPOTTED ON THE OUTSIDE OF NR 2 ENGINE OBSERVED BY RAMP SUPERVISOR.  TROUBLESHOOTING ENGINE NR 2 FIRE BOTTLE DISCHARGE TO P8-1 PANEL (MODULE) ENGINE/APU FIRE.  REPLACED P8-1 PANEL IAW B737-400 AMM 26-21-51-404-007 AND BOTH ENGINE FIRE EXTINGUISHER BOTTLES IAW B737-400 AMM 26-21-11-404-010.  INSPECTED AREA OF ENGINE NR 2 DUE TO DISCHARGE OF BOTTLES IAW B737-400 AMM 72-00-00-216-04 6-000.

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