# SDR 0102929871

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2001
- Submitted: August 23, 2001
- Operation: Air carrier
- Aircraft: [N780NC](https://openairdocs.org/aircraft/N780NC), registered now
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 48102
- Aircraft time: 54,369 hours, 50,880 cycles
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Separator
- Part number: 17946081
- Part serial: 67692
- Condition: Separated
- Location: A/C Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0102929871

## Discrepancy

AIRCRAFT LOST CABIN PRESSURIZATION DURING CRUISE AT 31,000 FEET.  CREW FOLLOWED COM PROCEDURE AND EMERGENCY DESCENDED TO 10,000 FEET.  CABIN CLIMBED 700-800 FPM WITH THROTTLES AT IDLE.  CONTINUED TO DTW AND LANDED WITHOUT INCIDENT.  MAINTENANCE FOUND WATER SEPARATOR CANISTER SEPARATED.  REPLACED THE LEFT WATER SEPARATOR.  AIRCRAFT RETURNED TO SERVICE.

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