Narrative:

Briefed a flaps 30 approach and landing runway 35R. Due to gusty winds planned for a ref of 145 and a target speed of 160 KTS. ATC vectored us off of the arrival and had us parallel the course with a heading and descent while pointing out multiple traffic eastbound to intercept final for 35L. Twice approach control gave us direct points on published ILS for us to join for the visual approach to runway 35R requiring changes to the FMC. Normal configuration was commanded along with the landing checklist. At approximately 6;500 ft while hand flying the airplane I called for flaps 30 and target speed. All was normal until about 400 ft when we received a GPWS alert for 'too low terrain.' I double checked the gear was down; speed was target plus about 5 which was roughly 165 KTS. I then noticed that the flaps were still set at 15 degrees. Due to our higher than normal target speed we were well above the yellow band on the airspeed indicator; pitch was not abnormally high. I added about another 5 KTS and landed the aircraft.

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Original NASA ASRS Text

Title: A distracted B737 crew landed with Flaps 15 in gusty winds as the GPWS TOO LOW TERRAIN warning alerted at 400 FT after a task saturated the First Officer failed to hear the Captain's Flaps 30 request.

Narrative: Briefed a Flaps 30 approach and landing Runway 35R. Due to gusty winds planned for a ref of 145 and a target speed of 160 KTS. ATC vectored us off of the arrival and had us parallel the course with a heading and descent while pointing out multiple traffic eastbound to intercept final for 35L. Twice Approach Control gave us direct points on published ILS for us to join for the visual approach to Runway 35R requiring changes to the FMC. Normal configuration was commanded along with the landing checklist. At approximately 6;500 FT while hand flying the airplane I called for Flaps 30 and target speed. All was normal until about 400 FT when we received a GPWS alert for 'too low terrain.' I double checked the gear was down; speed was target plus about 5 which was roughly 165 KTS. I then noticed that the flaps were still set at 15 degrees. Due to our higher than normal target speed we were well above the yellow band on the airspeed indicator; pitch was not abnormally high. I added about another 5 KTS and landed the aircraft.

Data retrieved from NASA's ASRS site as of July 2013 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.