# SDR DLL13991707

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N790DL
- Make and model: Lkheed 10113851
- Aircraft serial: 193A1143
- Engine: Rroyce RB21122B02
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Sensor
- Condition: Shorted
- Location: Nr 3 Engine
- Stage of operation: DE
- Nature of condition: N
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLL13991707

## Discrepancy

ON DESCENT, NR 3 ENG 'A' LOOP FIRE LIGHT AND 'B' LOOP ON MCO.  ENGINE SHUTDOWN, FIRED BOTH EXT BOTTLES, STILL HAD A LOOP LIGHT.  REPLACED UPPER AND LOWER FAN CASE LOOPS AND GEARBOX LOOP.

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