# SDR MASA2012122852378

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2012
- Submitted: January 25, 2013
- Operation: Air carrier
- Aircraft: N521LR
- Make and model: Cndair CL6002C10
- Aircraft serial: 10261
- Aircraft time: 15,358 hours, 10,966 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Regulator Valve
- Condition: Leaking
- Location: Apu
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MASA2012122852378

## Discrepancy

SMOKE AFT LAV WARNING AFTER TAKEOFF RTF.  FOUND OIL LEAK FROM APU CAUSING WARNING AND DEFERRED APU PER SL CRJ700/900-SL-49-003.  REMOVED AND REPLACED SUMP PRESS REG VALVE.

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