Narrative:

During arrival/descent we experienced 'left bleed duct' warning message. First officer was pilot flying and I ran the QRH. As described in the QRH the bleeds closed and the cabin altitude began to climb at a nominal rate. We were at approximately FL240 at this point and requested expedited descent. At that same moment continuing the QRH; a flight attendant called and said there was smoke in the cabin; apparently emanating from the rear lavatory and the smell was very bad. We immediately declared emergency with ATC [for expedited clearance to our destination]. ATC was notified of the nature of the emergency; bleed issue and smoke in the cabin. QRH for smoke/fumes removal was executed. Further communication with the flight attendants indicated that the smoke smell had dissipated and that it was essentially smell; not actual visual smoke. This appeared consistent with the indications in the cockpit and also that we experienced no smell or smoke in the cockpit during the entire event. I told the flight attendants to prepare for an emergency landing shortly as a continuing precaution; and then briefed the passengers. Also notified ATC that we had the situation stabilized. An expedited but uneventful ILS was completed to landing. Upon clearing the runway; we had the ground emergency units inspect the aircraft to verify our condition. They reported nothing abnormal; we then proceeded to the gate. There was not sufficient time to notify dispatch during the incident given the close distance to the airport and cockpit workload. Dispatch and maintenance were notified on ground as soon as it was practicable. Following the event the flight attendants reported not feeling well.cascading deteriorating conditions involving multiple QRH procedures during a high stress/workload could easily lead to confusion. Things can become a blur and it is important to force yourself to slow down and resist the tendency to go too fast especially when navigating multiple and linked QRH procedures.

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Original NASA ASRS Text

Title: During descent a CRJ-900 EICAS alerted L BLEED DUCT and about the same time a flight attendant reported a bad odor and smoke from the aft lavatory. An emergency was declared; the QRH completed and the flight proceeded to the nearby filed destination.

Narrative: During arrival/descent we experienced 'L Bleed Duct' Warning message. First Officer was pilot flying and I ran the QRH. As described in the QRH the bleeds closed and the cabin altitude began to climb at a nominal rate. We were at approximately FL240 at this point and requested expedited descent. At that same moment continuing the QRH; a flight attendant called and said there was smoke in the cabin; apparently emanating from the rear lavatory and the smell was very bad. We immediately declared emergency with ATC [for expedited clearance to our destination]. ATC was notified of the nature of the emergency; bleed issue and smoke in the cabin. QRH for Smoke/Fumes removal was executed. Further communication with the flight attendants indicated that the smoke smell had dissipated and that it was essentially smell; not actual visual smoke. This appeared consistent with the indications in the cockpit and also that we experienced no smell or smoke in the cockpit during the entire event. I told the flight attendants to prepare for an emergency landing shortly as a continuing precaution; and then briefed the passengers. Also notified ATC that we had the situation stabilized. An expedited but uneventful ILS was completed to landing. Upon clearing the runway; we had the ground emergency units inspect the aircraft to verify our condition. They reported nothing abnormal; we then proceeded to the gate. There was not sufficient time to notify Dispatch during the incident given the close distance to the airport and cockpit workload. Dispatch and Maintenance were notified on ground as soon as it was practicable. Following the event the flight attendants reported not feeling well.Cascading deteriorating conditions involving multiple QRH procedures during a high stress/workload could easily lead to confusion. Things can become a blur and it is important to force yourself to slow down and resist the tendency to go too fast especially when navigating multiple and linked QRH procedures.

Data retrieved from NASA's ASRS site 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.