# SDR ASA0440194

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2004
- Submitted: February 28, 2005
- Operation: Air carrier
- Aircraft: N774AS
- Make and model: Boeing 737-4Q8
- Registry model: [Boeing 737-4Q8](https://openairdocs.org/model/boeing-737-4q8) (OpenAirDocs)
- Aircraft serial: 25107
- Engine: Cfmint CFM563C1
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Seal
- Part number: 1663M91G03
- Condition: Out Of Position
- Location: Nr 2 Engine
- Part time: 24,988 hours, 13,806 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASA0440194

## Discrepancy

PDX - AFTER TAKEOFF F/A'S REPORTED FOG IN THE CABIN.  REMOVED AND REPLACED THE NR 2 ENGINE IAW ASA T/C 48571015.  REF ASA LOG PAGE AVAILABLE UPON REQUEST.  THIS REPORT IS BEING FILED AS CLOSED AS CONFIRMED BY THE TEARDOWN REPORT FINDING THAT THE SMOKE EVENT WAS INDEED A RESULT OF THE FOLLOWING: NR 3 AFT AIR/OIL SEAL SEPARATED AND MOVED AFT AND CONTACTED THE HPS 1-2 SPOOL AND FORWARD SHAFT, FORWARD HALF OF SEAL REMAINED BOLTED TO FAN FRAME.  THE ORIGINAL COPY OF THE TEARDOWN REPORT IS AVAILABLE AT THE RELIABILITY DEPARTMENT.  (M)

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