A crj-900 depressurized automatically when; first the left bleed closed with the left bleed leak war...

Narrative:

Enroute we received a left bleed leak warning. After 30 seconds; the warning persisted and the AC automatically closed both bleeds and began to depressurize. I was surprised how fast it depressurized. We followed the pom emergency procedures and began an expedited descent to 10;000 feet. The cabin altitude did not exceed 10;000 feet; but close enough to receive a cabin altitude warning. Cabin temperature began to rise and it was very uncomfortable.I transferred controls to the first officer; so I could brief the flight attendants. I asked them to prepare for landing and give ice water to the passengers if needed as safety permits. I briefed the passengers. We requested priority handling to descend and requested the VOR 13. We called ahead to operations and dispatch to have them ensure our gate was ready and the ally would be clear. We landed taxied off the runway directly into the gate and had the door open with minimal delay.

Original NASA ASRS Text

Title: A CRJ-900 depressurized automatically when; first the left bleed closed with the LEFT BLEED LEAK warning; then 30 seconds later; the right bleed automatically closed. The crew descended from 17;000 feet to 10;000 feet and continued to the filed destination.

Narrative: Enroute we received a Left Bleed Leak warning. After 30 seconds; the warning persisted and the AC automatically closed both bleeds and began to depressurize. I was surprised how fast it depressurized. We followed the POM emergency procedures and began an expedited descent to 10;000 feet. The cabin altitude did not exceed 10;000 feet; but close enough to receive a Cabin ALT Warning. Cabin temperature began to rise and it was very uncomfortable.I transferred controls to the First Officer; so I could brief the flight attendants. I asked them to prepare for landing and give ice water to the passengers if needed as safety permits. I briefed the passengers. We requested priority handling to descend and requested the VOR 13. We called ahead to Operations and Dispatch to have them ensure our gate was ready and the ally would be clear. We landed taxied off the runway directly into the gate and had the door open with minimal delay.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1091999
Time
Date	201306
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Engine Air Pneumatic Ducting
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Flight Deck / Cabin / Aircraft Event Other / Unknown

A crj-900 depressurized automatically when; first the left bleed closed with the left bleed leak warning; then 30 seconds later; the right bleed automatically closed. The crew descended from 17;000 feet to 10;000 feet and continued to the filed destination.