# SDR 96FDEA00125

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N638FE
- Make and model: Boeing 747245F
- Aircraft serial: 21841
- Engine: Pwa JT9D7A
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Gearbox
- Part number: 779600
- Condition: Failed
- Location: Nr 4 Eng
- Stage of operation: CL
- Nature of condition: K, J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96FDEA00125

## Discrepancy

SYD - DURING CLIMBOUT, SHUT NR 4 ENG DOWN DUE TO LOSS OF OIL QTY LOW PRESS AND ILLUM OF OIL PRESS LIGHT.  FLIGHT RETURNED TO SYDNEY.  WINDMILL TIME PER CREW SAFETY REPORT 24 MIN.  FOUND DE-AERATOR BROKEN.  REPLACED MAIN GEARBOX ASSY AS PER PRATT AND WHITNEY JT9D ENG MANUAL 72-00-00, GEARBOX INSTALLATION ENG RII C/W.

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