# SDR AT9900633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N810AT](https://openairdocs.org/aircraft/N810AT), registered now
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47277
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38025611
- Condition: Failed
- Location: Apu Compt
- 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/AT9900633

## Discrepancy

AT 5,000 FEET DURING CLIMB, SMOKE FILLED THE COCKPIT AND CABIN.  AIRCRAFT RETURNED TO AIRPORT.  FOUND CRACK IN TAURUS. REMOVED AND REPLACED APU.  OPS CHECK AND LEAK CHECK GOOD IAW 49-10-0.

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