# SDR J7SA2020120800252

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2020
- Submitted: December 8, 2020
- Operation: Air carrier
- Aircraft: N545FX
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20302
- Aircraft time: 9,466 hours, 5,957 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Condition: Seized
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/J7SA2020120800252

## Discrepancy

CREW NOTICED SMOKE IN COCKPIT AND CABIN WHEN RUNNING THE AIR SOURCE OFF THE APU.  PERFORMED FRICTION TEST ON ACM, IAW CMM 21-52-57-700-801 AND FOUND ACM TURBINE SEIZED.  REMOVED AND REPLACED ACM, IAW BD 100 AMM 21-52-13-400-801.  LEAK TEST AND OPERATIONS TEST PERFORMED, IAW AMM 21-52-00-710-801, NO DEFECTS NOTED.  P/N 3471A020000; S/N 00155.

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