# SDR AOQ2005F00003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2005
- Submitted: July 29, 2005
- Operation: Air carrier
- Aircraft: N39TW
- Make and model: Lear 31A
- Registry model: [Lear 31A](https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Aircraft serial: 047
- Engine: Garrtt TFE73123B
- System (JASC): [7700 · Engine Indicating System](https://openairdocs.org/jasc/7700)
- Part: Gasket
- Part number: 30710272
- Condition: Worn
- Location: Ni Monopole
- Part time: 4,119 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AOQ2005F00003

## Discrepancy

DURING CLIMB, AT ALTITUDE, THE NR 1 ENGINE FIRE WARNING ILLUMINATED, ITT INDICATED 805 DEGREES.  THRUST REDUCED BELOW 790 DEGREES ITT, AND LIGHT WENT OUT.  ALL ENGINE INDICATIONS WERE NORMAL.  MAINTENANCE TROUBLESHOT NR 1 ENGINE FIRE WARNING LIGHT ILLUMINATION TO A LEAKING N1 MONOPOLE GASKET.  MAINTENANCE REPLACED MONOPOLE GASKET.  A SATISFACTORY OPERATIONAL AND LEAK TEST WAS CONDUCTED AND THE AIRCRAFT WAS RTS.  (K)

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