# SDR DELR081309

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2009
- Submitted: August 13, 2009
- Operation: General aviation
- Aircraft: [N31MJ](https://openairdocs.org/aircraft/N31MJ), registered now
- Make and model: Lear 31A
- Registry model: [Lear 31A](https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Aircraft serial: 185
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Lens
- Part number: 122250022804
- Condition: Melted
- Location: Nav Lights
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DELR081309

## Discrepancy

NEW NAV LENS FROM ACFT ARE MELTING THROUGH IN SHORT TIME PERIODS.  THIS ACFT HAD A NEW ONE THAT ONLY LASTED 200 HRS, THE REPLACEMENT IS NOW WARPING AT 20 HRS AND WILL NEED TO BE REPLACED AGAIN SOON.

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