Boeing 737 flight crew reported receiving a low speed alert and a le transit light during approach.

Attributes
ACN	1539124
Time
Date	201804
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Plan	IFR
Component
Aircraft Component	Flap/Slat Indication
Person 1
Function	First Officer
Person 2
Function	Captain
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Speed All Types

Narrative:

During the approach; fully configured with gear down and flaps 30 degrees; we got a low speed alert and a le transit light. We elected to execute a go around in order to analyze the problem. Procedures were accomplished as per the QRH. For precautionary reasons [ATC was advised] and a flaps 15 landing was made. Note that at some point due to the type of failure the airplane had; a stick shaker activated due to the airplane not recognizing that we had the correct flap setting for the current speed.leading edge sensor malfunction as told by maintenance

Original NASA ASRS Text

Title: Boeing 737 flight crew reported receiving a low speed alert and a LE Transit light during approach.

Narrative: During the approach; fully configured with gear down and flaps 30 degrees; we got a low speed alert and a LE Transit light. We elected to execute a go around in order to analyze the problem. Procedures were accomplished as per the QRH. For precautionary reasons [ATC was advised] and a flaps 15 landing was made. Note that at some point due to the type of failure the airplane had; a stick shaker activated due to the airplane not recognizing that we had the correct flap setting for the current speed.Leading edge sensor malfunction as told by maintenance

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.