# SDR 2WAA201703170001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2017
- Submitted: March 17, 2017
- Operation: Air carrier
- Aircraft: [N802WA](https://openairdocs.org/aircraft/N802WA), registered now
- Make and model: Doug MD 83
- Registry model: [Doug MD 83](https://openairdocs.org/model/mcdonnell-douglas-md-83) (OpenAirDocs)
- Aircraft serial: 53052
- Aircraft time: 54,429 hours, 36,471 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Cooling Turbine
- Condition: Defective
- Location: Ac Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2WAA201703170001

## Discrepancy

DURING CRUISE AT FL290, CABIN ALT STARTED TO CLIMB, RT PACK PRESS BEGAN OSCILLATING, FLOW LIGHT ILLUMINATED, PERFORMED QRH PROCEDURE AND BEGAN AND EMERGENCY DECENT. TROUBLE SHOT SYSTEM TO A DEFECTIVE RIGHT COOLING TURBINE. REMOVED AND REPLACED RT COOLING TURBINE IAW AMM 21-51-01 OPS REVEALED LOW AIR FLOW. REMOVED AND REPLACED RIGHT COOLING FAN IAW AMM 21-51-01 LEAK CHECK AND OPS CHECK IAW AMM 21-00-00. NO LEAKS NOTED OPS CK NORMAL AT THIS TIME.

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