What was found
DFW - FLT 1442 - AFTER TAKEOFF ELP EN ROUTE DFW, RIGHT MAIN LANDING GEAR RED UNSAFE LIGHT REMAINED ILLUMINATED. AIRCRAFT YAWED INDICATING GEAR OR DOORS STILL EXTENDED. PERFORMED QRH PROCEDURE AND RIGHT MAIN LANDING GEAR RETRACTED AND LIGHT EXTINGUISHED. LANDED DFW WITHOUT INCIDENT. REPLACED RIGHT MAIN LANDING GEAR RETRACT CYLINDER. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)