Crj flight crew reported being low on an ILS approach and corrected after an altitude alert from ATC...

Attributes
ACN	1369366
Time
Date	201607
Local Time Of Day	1201-1800
Place
Locale Reference	DFW.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Component
Aircraft Component	Radio Altimeter
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

I was the pilot monitoring and the first officer was the pilot flying. We were clear for a visual approach runway 18R dfw. The first officer captured the localizer and glide slope with autopilot on. While we were with localizer and glide slope captured with autopilot on; ATC called with an altitude alert. I replied; 'correcting' and took the controls; disengaged the autopilot and leveled off. At this point I saw the ILS glide slope indicating above glide on the primary flight display (pfd) and the PAPI was showing below glide slope. I followed the PAPI reference for a normal visual landing.

Original NASA ASRS Text

Title: CRJ flight crew reported being low on an ILS approach and corrected after an altitude alert from ATC.

Narrative: I was the pilot monitoring and the First Officer was the pilot flying. We were clear for a visual approach Runway 18R DFW. The First Officer captured the localizer and glide slope with autopilot on. While we were with localizer and glide slope captured with autopilot on; ATC called with an altitude alert. I replied; 'Correcting' and took the controls; disengaged the autopilot and leveled off. At this point I saw the ILS glide slope indicating above glide on the Primary Flight Display (PFD) and the PAPI was showing below glide slope. I followed the PAPI reference for a normal visual landing.

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.