# SDR USAAD99095

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N810US
- Make and model: Doug DC-9-81(MD-81)
- Registry model: [Doug DC-9-81(MD-81)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81) (OpenAirDocs)
- Aircraft serial: 48042
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Part number: V1211
- Condition: Contaminated
- Location: Cabin
- Stage of operation: CL
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAAD99095

## Discrepancy

PHL-PIT - FLT 656 - AFTER TAKEOFF, BOTH AFT LAVATORY SMOKE DETECTORS ACTIVATED.  THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED BOTH WATER SEPARATOR COALESCER BAGS.  (M)

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