# SDR 2004F00142

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2004
- Submitted: May 25, 2004
- Operation: Air carrier
- Aircraft: N660AS
- Make and model: Lear 60LEAR
- Aircraft serial: 191
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Element
- Part number: 24403915
- Condition: Malfunctioned
- Location: Lt Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004F00142

## Discrepancy

DURING PREFLIGHT PROCEDURES, THE LT ENGINE FIRE TEE HANDLE DID NOT ILLUMINATE VIA PRESS TO TEST.  SYSTEM TROUBLESHOOTING REVEALED THAT THE LT ENGINE ACCESSORY GEARBOX FIRE SENSING ELEMENT, PIN U WAS SHORTED BETWEEN THE CENTER CONDUCTOR AND SHIELDING.  REPLACEMENT OF THE FIRE SENSING ELEMENT CORRECTED THE PROBLEM.  (M)

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