# SDR REXA2020010724025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2019
- Submitted: January 7, 2020
- Operation: Air carrier
- Aircraft: [N166PQ](https://openairdocs.org/aircraft/N166PQ), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15166
- Aircraft time: 28,164 hours, 19,918 cycles
- System (JASC): [4980 · APU Exhaust System](https://openairdocs.org/jasc/4980)
- Part: Seal
- Part number: 70831112
- Condition: Torn
- Location: Apu Exhaust
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/REXA2020010724025

## Discrepancy

"AWR. HIDDEN DISCREPANCY: TORN SEAL IN APU TAILCONE EXHAUST CONE ASSY [IN REF NRC 187] (APU) (SM).                                           
"B-SEAL AFT WAS REPLACED PER CRJ-900 SRM 51-42-10-001-001-A01 AND AMM 49-81-00-960-802.                                                      
"

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