# SDR SIMA201810165001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2018
- Submitted: October 16, 2018
- Operation: Air carrier
- Aircraft: [N826AE](https://openairdocs.org/aircraft/N826AE), registered now
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145592
- Aircraft time: 33,586 hours, 29,361 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Switch
- Condition: Faulty
- Location: Ac Bay
- Stage of operation: UK
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA201810165001

## Discrepancy

PK 1 OVL CAUTION MESSAGE LOST CABIN PRESS AT FL240 DECLARE EMR PK 2 CLSD ADVISORY. -C/A-FOUND CMC MESSAGES PACK NR 1 OVERPRESSURE AND HAD CB NR 2 PACK TRIPPING IAW AMM 45-45-00. REMOVED AND REPLACED PACK NR 1 OVERPRESSURE SWITCH IAW AMM 21-51-06. REMOVED AND REPLACED NR 2 PACK VALVE IAW AMM 21-51-01. PERFORMED OPERATIONAL TEST IAW AMM 21-51-00 OPC GOOD. NO DEFECTS NOR MESSAGES FOUND AT THIS TIME. PERFORMED OPC OF PACK NR 1 IAW AMM TASK 21-51-00-700-802-A. OPC GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.