# SDR TWAA9614303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N134TW](https://openairdocs.org/aircraft/N134TW), registered now
- Make and model: Boeing 747156
- Aircraft serial: 19958
- System (JASC): [7931 · Engine Oil Pressure](https://openairdocs.org/jasc/7931)
- Part: Oil Press Sw
- Part number: 21SN04149
- Condition: Leaking
- Location: Nr 1 Engine
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA9614303

## Discrepancy

STL - FLT 845 - DURING CRUISE, SHUT DOWN NR 1 ENGINE, SN 4183, DUE TO DECREASING OIL QUANTITY.  FOUND OIL PRESSURE DIFFERENTIAL SWITCH, MFG PN 21SN04-149, CAP LEAKING.  RE-TORQUED DIFFERENTIAL PRESSURE SWITCH CAP.  SERVICED ENGINE OIL SYSTEM.  ENGINE OPERATION AND OIL QUANTITY SYSTEM OPERATION CHECKED NORMAL.  ENGINE TOTAL TIME:  79,296 HOURS; 13,809 CYCLES.  CHECK C - 2-5-96 - JFK.  (X)

---
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.