# SDR 0500021240

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2005
- Submitted: January 11, 2005
- Operation: Air carrier
- Aircraft: N240NW
- Make and model: Doug DC-10-30
- Registry model: [Doug DC-10-30](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30) (OpenAirDocs)
- Aircraft serial: 48319
- Aircraft time: 53,380 hours, 8,914 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: TSCP7004B
- Part serial: P90337
- Condition: Smoke
- Location: Apu Bay
- Part time: 74,440 hours, 10,136 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0500021240

## Discrepancy

DURING CLIMB, FLIGHT ATTENDANT REPORTED MULTIPLE SMOKE DETECTORS SOUNDING AND SMOKE/SMELL IN THE CABIN.  FLIGHT CREW RETURNED TO DEPARTURE AIRPORT PERFORMING AN UNEVENTFUL LANDING.  MAINTENANCE REPLACED THE APU.  OPERATIONAL CHECK GOOD.

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