Air carrier flight crew reported that a low altitude warning activated during the approach into fsd....

Attributes
ACN	1434720
Time
Date	201703
Local Time Of Day	1201-1800
Place
Locale Reference	FSD.Airport
State Reference	SD
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Medium Transport
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach Descent
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT

Narrative:

We were descending below 5000 feet setting up for the RNAV 15 approach into fsd from the east when the egpws sounded. We responded to the alert by climbing. Once the alert stopped; we leveled the plane. As we leveled; we exceeded 250 knots below 10;000 feet. We corrected right away and alerted ATC to the alarm. We then continued the approach with no other events.we received an egpws warning setting up for RNAV 15 into fsd. In our response to the warning; we exceeded 250 knots. We believe that the warning was in error. ATC said we were above the safe altitude for that segment.when in the simulator if we practiced low density altitude and light weight egpws responses we may have responded quick enough to avoid the over speed.

Original NASA ASRS Text

Title: Air Carrier flight crew reported that a low altitude warning activated during the approach into FSD. Crew took evasive action and landed without incident.

Narrative: We were descending below 5000 feet setting up for the RNAV 15 approach into FSD from the east when the EGPWS sounded. We responded to the alert by climbing. Once the alert stopped; we leveled the plane. As we leveled; we exceeded 250 knots below 10;000 feet. We corrected right away and alerted ATC to the alarm. We then continued the approach with no other events.We received an EGPWS warning setting up for RNAV 15 into FSD. In our response to the warning; we exceeded 250 knots. We believe that the warning was in error. ATC said we were above the safe altitude for that segment.When in the simulator if we practiced low density altitude and light weight EGPWS responses we may have responded quick enough to avoid the over speed.

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.

Air carrier flight crew reported that a low altitude warning activated during the approach into fsd. Crew took evasive action and landed without incident.