# SDR 2021F00357

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2021
- Submitted: November 18, 2021
- Operation: General aviation
- Aircraft: [N604GS](https://openairdocs.org/aircraft/N604GS), registered now
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 604
- Aircraft time: 15,690 hours, 12,167 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Elec Connector
- Part number: MS3108E10SL4S
- Part serial: NA
- Condition: Shorted
- Location: Zone 200
- Part time: 15,690 hours, 12,167 cycles
- Stage of operation: AA
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021F00357

## Discrepancy

CABIN PRESSURIZATION SYSTEM WENT INTO EMERGENCY BLEED AIR MODE. LH MOD VLV CB TRIPPED. REMOVED AND REPLACED INTERNALLY SHORTED LH EMERGENCY PRESSURE VALVE (B223) CANNON PLUG (P897) P/N MS3108E-10SL-4S. OPS CHECK GOOD.

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