# SDR 97ZZZX525

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N230R](https://openairdocs.org/aircraft/N230R), registered now
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 130
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Mod Valve
- Part number: 2481172823
- Condition: Wire Shorted
- Location: Cabin
- Stage of operation: CR
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX525

## Discrepancy

WHILE ON A FLIGHT THE LEFT BLEED AIR SYSTEM WENT INTO EMERGENCY.  THE AIR IN EMERGENCY IS EXTREMELY HOT.  WHILE IN EMERGENCY, THE AIRCRAFT FILLED WITH THICK SMOKE AND EMERGENCY DESCENT WAS PERFORMED.  A LANDING WAS MADE WITHOUT INCIDENT.  INVESTIGATION FOUND PROBLEM OF THE AIRCRAFT GOING INTO EMERGENCY WAS CAUSED BY WIRING GOING TO MOD VALVE RELAY BRACKET (LEFT) GOT AGAINST A LINE GOING TO WINDSHIELD HEAT SYSTEM.  THE SMOKE WAS CAUSED BY AN IMPROPERLY INSTALLED CARPET FROM A RECENT INTERIOR JOB BLOCKING HEAT DUCTS.

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