# SDR DLL10971135

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N723DA](https://openairdocs.org/aircraft/N723DA), registered now
- Make and model: Lkheed 10113851
- Aircraft serial: 193C1150
- Engine: Rroyce RB21122*
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Gear Box
- Part number: 727003020
- Condition: Failed
- Location: Nr 3 Engine
- Stage of operation: CR
- Nature of condition: Y, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLL10971135

## Discrepancy

IN FLT CRUISE FL350 NR 3 ENG N3 WENT TO ZERO FOLLOWED BY LOSS OF OIL PRESSURE.  NR 3 ENG SHUT DOWN WITH NO OTHER ABNORMAL INDICATIONS.  REPLACED NR 3 ENG GEARBOX.  ALL NORMAL ON ENGINE RUN PER P.F.H.B. 7-0-7-7 TESTS 1-3-9-16 AND 20.

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