# SDR CHQA201000199

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2010
- Submitted: October 14, 2010
- Operation: Air carrier
- Aircraft: N370SK
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145515
- Aircraft time: 23,191 hours, 19,509 cycles
- Engine: Allsn AE3007A
- Engine time: 17,672 hours, 14,501 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Flex Duct
- Part number: X7064
- Condition: Disconnected
- Location: Ac Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA201000199

## Discrepancy

WHILE CLIMBING THROUGH 5,000FT THE CREW RECEIVED A PACK 1 VALVE CLOSED AND BLEED 1 VALVE CLOSED MESSAGE WITH PACK 2 ON MEL.  THE CREW ATTEMPTED TO RESET SEVERAL TIMES BUT THE PROBLEM PERSISTED.  THE AIRCRAFT THEN ENTERED ICING AND THEY RECEIVED A WING ANTI-ICE FAIL MESSAGE.  THE AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT.  MAINTENANCE FOUND THE FLEXIBLE DUCT FROM RAM AIR VALE TO THE HEAT EXCHANGER FOR THE NR 1 PACK SPLIT AND ON THE NR 2 PACK A DISCONNECTED DUCT COMING FROM THE PACK 2 HEAT EXCHANGER.  THE DISCONNECTED DUCT ON PACK 2 WAS RE-ATTACHED AND PACK 1 WAS PLACED ON MEL.  IN CMH ON 10/14/2010 THE PACK 1 MEL WAS CLEARED WITH THE REPLACEMENT OF THE FLEXIBLE DUCT FROM THE RAM AIR VALVE TO THE HEAT EXCHANGER AND THE DUAL TEMP CONTROL VALVE DUCT COUPLING.

---
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.