# SDR SWAA012677

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2001
- Submitted: October 4, 2001
- Operation: Air carrier
- Aircraft: 082SW
- Make and model: Boeing 737-2H4
- Registry model: [Boeing 737-2H4](https://openairdocs.org/model/boeing-737-2h4) (OpenAirDocs)
- Aircraft serial: 22731
- Aircraft time: 62,091 hours, 67,265 cycles
- Engine: Ge CFM56*
- Engine time: 66,405 hours, 74,748 cycles
- System (JASC): [3140 · Central Computers](https://openairdocs.org/jasc/3140)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA012677

## Discrepancy

ENGINE SHUT DOWN, DECLARED EMERGENCY, AIR TURNBACK.  NR 1 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED AFTER T/O.  REMOVED AND REPLACED OIL FILTER AND RAN ENGINE.  CK'D FILTER, NO CONTAMINANTS FOUND.  OPS CK GOOD PER MM.

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