What was found
AT LEVEL OFF AT 28000 FT, LOWER AFT BODY OVERHEAT LIGHT ILLUMINATED. COMPLIED WITH QRH PROCEDURES. LIGHT EXTINGUISHED AND REMAINED EXTINGUISHED WITH NR 3 BLEED VALVE CLOSED AND RIGHT PACK OFF. CHECKED SENSOR IN AFT AIRSTAIR AREA, REPOSITIONED TWO PLACES OF POSSIBLE CONCERN. RAN NR 3 ENGINE PER JRH FOR 5 PLUS MINUTES WITH NO OVERHEAT INDICATION. CHECKED SENSOR ON RT SIDE OF AIRSTAIRS AREA, FOUND SENSOR AT ONE PLACE TOUCHING, REPOSITION SENSOR. RAN A/C AT POWER FOR 10 MINUTES ON GROUND MEM OPS CHECKED NORMAL.