# SDR DL73K991589

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N311DL
- Make and model: Boeing 737232
- Aircraft serial: 23083
- Engine: Pwa JT8D15
- System (JASC): [7510 · Engine Anti-Icing System](https://openairdocs.org/jasc/7510)
- Part: Valve
- Condition: Failed
- Location: Nr 1 Engine
- Component: 320115
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL73K991589

## Discrepancy

ENGINE OIL TEMP WAS IN THE YELLOW ZONE AROUND 150 DEG C FOR 15 MINUTES.  WHEN THE ENGINE WAS IN IDLE THE TEMP WENT UP TO THE RED LINE.  REPLACED NR 1 ENGINE FUEL HEAT VALVE (FOUND OPEN/CLOSE IND TANG HANGING UP ON VALVE BODY IN BOTH DIRECTIONS) PER PFHB DRAINED AND REPLENISHED OIL RESERVOIR.  REPLACED MAIN OIL SCREEN.  OPERATION AND LEAK CHECK GOOD ON ENGINE   RUN.

---
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.