# SDR CHQA200800231

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2008
- Submitted: November 24, 2008
- Operation: Air carrier
- Aircraft: N371SK
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145535
- Aircraft time: 19,662 hours, 14,650 cycles
- Engine: Allsn AE3007A
- Engine time: 18,884 hours, 15,472 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Regulator
- Part number: JEHX0520150B
- Condition: Clogged
- Location: Nr 2 Bleed Sys
- 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/CHQA200800231

## Discrepancy

FLIGHT 5374, STL TO DSM - DURING CLIMB IN ICING CONDITIONS THE FLIGHT CREW RECEIVED A BLD 2 LOW TEMP MESSAGE ON EICAS SHORTLY AFTER THE ANTI-ICING SYSTEM TURNED ON.  THE QRH WAS FOLLOWED AND IT WAS DECIDED TO RETURN TO STL DUE TO WEATHER CONDITIONS AT THE DESTINATION AIRPORT.  MAINTENANCE TROUBLESHOT THE FAULT TO A CLOGGED PNEUMATIC REGULATOR FOR THE BLEED 2 THERMOSTAT.  THE REGULATOR WAS REPLACED AND THE SYSTEM OPERATED NORMALLY.

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