A crj-700 crew flying the atl dirty RNAV arrival and cleared for the ILS 27L went below the glideslo...

Attributes
ACN	1163038
Time
Date	201404
Local Time Of Day	1201-1800
Place
Locale Reference	A80.TRACON
State Reference	GA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach Descent
Route In Use	STAR DIRTY 2
Flight Plan	IFR
Person 1
Function	First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Overshoot Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

We were cleared to 'descend via' the dirty arrival and cleared for the ILS 27L. We were working through staying on the snowflake during the descent. Somehow when transitioning to the ILS we got below the glideslope; but still above the published altitudes that we needed to stay above. I am not sure if it was a violation; however the ATC controller told us if we were going to be below the glideslope that we needed to let him know. We leveled out and recaptured the glideslope with no further incident.the transition between the descend via and the actual approach is always complicated since everybody does it a little different. As far as I know there has not been a company policy on how to handle it. We were so focused on the 'descend via' that we lost focus on the glideslope.better briefing on the transition and how we planned to handle it and when we would clean it up.

Original NASA ASRS Text

Title: A CRJ-700 crew flying the ATL DIRTY RNAV Arrival and cleared for the ILS 27L went below the glideslope but stayed above the minimum altitude crossing restrictions. ATC advised the confused crew that they should have alerted if flying below the glideslope.

Narrative: We were cleared to 'descend via' the DIRTY Arrival and cleared for the ILS 27L. We were working through staying on the snowflake during the descent. Somehow when transitioning to the ILS we got below the glideslope; but still above the published altitudes that we needed to stay above. I am not sure if it was a violation; however the ATC Controller told us if we were going to be below the glideslope that we needed to let him know. We leveled out and recaptured the glideslope with no further incident.The transition between the descend via and the actual approach is always complicated since everybody does it a little different. As far as I know there has not been a company policy on how to handle it. We were so focused on the 'descend via' that we lost focus on the glideslope.Better briefing on the transition and how we planned to handle it and when we would clean it up.

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.

A crj-700 crew flying the atl dirty RNAV arrival and cleared for the ILS 27L went below the glideslope but stayed above the minimum altitude crossing restrictions. ATC advised the confused crew that they should have alerted if flying below the glideslope.