# SDR 95ZZZX3391

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N135DE
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 667
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Butt-Splice
- Part number: 320570
- Condition: Burned
- Location: Cabin Heat Sys
- Stage of operation: IN
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX3391

## Discrepancy

LEAR JET WIRING MANUAL 21-42-00, PAGE 7, AUXILIARY CABIN HEAT SYSTEM.  WIRE NR HC47A10T, A 10-GAUGE WIRE, IS BUTT-SPLICED TO A 16-GAUGE WIRE AT THE AUXILIARY HEAT RELAY PANEL.  THE BUTT-SPLICE AND THE 16-GAUGE WIRE OVERHEATED CAUSING THE PLASTIC TO MELT ON THE SPLICE AND MAKES THE 16-GAUGE WIRE BROWN.  THIS IS THE SECOND OCCURRENCE OF OVERHEATING AT THIS SPLICE.

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