# SDR VNAA2020061311101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 11, 2020
- Submitted: June 13, 2020
- Operation: Air carrier
- Aircraft: [N551NN](https://openairdocs.org/aircraft/N551NN), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15327
- Aircraft time: 13,849 hours, 12,621 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Case
- Condition: Cracked
- Location: Apu
- Part time: 25,481 hours, 39,322 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA2020061311101

## Discrepancy

FOUND A CRACK ON APU AT 7&6 O'CLOCK POSITION AROUND APU THERMOCOUPLE. REMOVED AND REPLACED APU IAW CRJ900 AMM 49-10-00-000/400-801. OPS CHECK GOOD.

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