# SDR CKSA98516

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N702CK](https://openairdocs.org/aircraft/N702CK), registered now
- Make and model: Boeing 747146
- Aircraft serial: 20332
- Engine: Pwa JT9D7A
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Malfunctioned
- Location: Nr 1
- Part time: 65,904 hours
- Stage of operation: DE
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CKSA98516

## Discrepancy

DURING ENGINE START, THE NR 1 ENGINE SMOKED.  CLEARED AFTER A FEW MOMENTS, ALL INDICATIONS WERE NORMAL.  DURING DESCENT AN OILY SMELL CAME THROUGH THE AIR CONDITIONING SYSTEM, WAS ABLE TO STOP THE SMELL BY CLOSING THE NR 1 ENGINE BLEED AIR VALVE.  REMOVED AND REPLACED THE NR 1 ENGINE AND TRIMMED IAW AIA WORK CARD 7EC7100.  NO DEFECTS NOTED ON GROUND RUN.

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