# SDR RAAA96E4010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N9744C
- Make and model: Lkheed 188A
- Aircraft serial: 188A1140
- Engine: Allsn 501D13
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Red Gearbox
- Part number: 6874188
- Condition: High Oil Press
- Location: Nr 3 Engine
- Part time: 37,016 hours
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RAAA96E4010

## Discrepancy

NR 3 ENGINE PRECAUTIONARY SHUTDOWN, AT 2026Z WHILE CLIMBING OUT OF ANC, DUE HIGH (244 PSI) REDUCTION GEARBOX OIL PRESSURE.  RETURNED TO ANC.  VERIFIED INDICATION SYSTEM.  REPLACED RGB OIL PUMP ASSY.  DID NOT CORRECT PROBLEM.  SUSPECT RGB INTERNAL OIL SYSTEM RESTRICTION.  REPLACED NR 3 ENGINE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.