# SDR AWXA0000643

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2000
- Submitted: September 21, 2000
- Operation: Air carrier
- Aircraft: [N509AW](https://openairdocs.org/aircraft/N509AW), registered now
- Make and model: Boeing 737-33A
- Registry model: [Boeing 737-33A](https://openairdocs.org/model/boeing-737-33a) (OpenAirDocs)
- Aircraft serial: 23636
- Aircraft time: 42,367 hours, 28,119 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Valve
- Part number: 31040
- Part serial: 1076
- Condition: Odor
- Location: E/E Bay Cooling
- Part time: 31,514 hours, 23,724 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA0000643

## Discrepancy

WHILE DESCENDING THRU 14000 ON APPROACH,  ACRID SMELL OCCURRED IN COCKPIT AND CABIN.  SMELL DISSIPATED WHEN PACKS PLACED IN HIGH.  NOTE:  WAS SAME SMELL THAT OCCURRED ON LP 7789484.  REMOVED AND REPLACED E/E EXHAUST COOLING VALVE, OPS CK NML.  MAIN BATTERY WAS REPLACED ON LP 7789484 FOR CAUSING SMOKE IN CABIN ON GROUND DUE TO OVERHEATING AND CHARGER REPLACED AS PRECAUTION.  BATTERY (P/N 30874-001) (S/N 8802429) TSR 463 HRS.

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