OBSTACLE CLEARANCE SURFACE PENETRATED BY MOBILE CRANE
PSN 300M BEYOND THR 27L AND BETWEEN 300M AND 460M N OF RCL.
522724N 0094225E. MAX ELEV 333FT / 165FT AGL. DAY AND NIGHT MARKED.
DURING IFR APCH RWY 27L AND RWY 09R CRANE WILL BE RETRACTED BELOW 
OBST FREE SURFACES.