B737-700 flight crew reported landing from an unstabilized approach to den.

Attributes
ACN	1738266
Time
Date	202003
Local Time Of Day	0601-1200
Place
Locale Reference	D01.TRACON
State Reference	CO
Environment
Light	Daylight
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 513
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Experience	Flight Crew Last 90 Days 414 Flight Crew Type 1500
Events
Anomaly	Deviation - Procedural Published Material / Policy Inflight Event / Encounter Unstabilized Approach

Narrative:

Vector put us inside drumm intersection which was 9;000 ft; MSL to be on path. We were given 'maintain 9;000 ft. Until established; cleared ILS runway 35R.' at that time; we talked about aircraft Y landing in front of us and the need to maintain one dot high for wake turbulence. We also had a decreasing headwind which necessitated a lower power setting that we also talked about. We configured early to regain the glideslope from maintaining 9;000 ft. Until established. The pilot flying asked for flaps 40 to help be in the slot. Concentrating on aircraft Y that landed in front of us; I failed to crosscheck the altitude when he asked for flaps back to 30 until I moved the flaps. At that time; we were at 402 ft. AGL. I should have directed a go-around at that time. Lesson learned.

Original NASA ASRS Text

Title: B737-700 flight crew reported landing from an unstabilized approach to DEN.

Narrative: Vector put us inside DRUMM intersection which was 9;000 ft; MSL to be on path. We were given 'Maintain 9;000 ft. until established; cleared ILS Runway 35R.' At that time; we talked about Aircraft Y landing in front of us and the need to maintain one dot high for wake turbulence. We also had a decreasing headwind which necessitated a lower power setting that we also talked about. We configured early to regain the glideslope from maintaining 9;000 ft. until established. The Pilot Flying asked for flaps 40 to help be in the slot. Concentrating on Aircraft Y that landed in front of us; I failed to crosscheck the altitude when he asked for flaps back to 30 until I moved the flaps. At that time; we were at 402 ft. AGL. I should have directed a go-around at that time. Lesson learned.

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.