An EMB145 was not deiced completely at the gate due to difficult access. A second procedure was required to clear the ice from the nose of the aircraft.

Narrative

After the passenger door was closed we requested deicing. About 10 minutes later; the deice truck came to the aircraft. The operator plugged his headset and followed the proper radio procedures. We configured the aircraft for deicing. Upon completion of the deicing the operator again plugged his headset to the aircraft; following proper radio procedures and stated that the aircraft was clean of ice. We called for a ramp crew for pushback. At the completion of the pushback; the ramper driving the tug noticed a large chunk of ice on the nose of the aircraft. We discussed the issue and the ramper stated that based on his training and the recommendations of a ramp supervisor; that the aircraft needed to be deiced again. The ramp crew pulled the aircraft back to the gate and was deiced again. It appears the narrow confines of the parking space make it hard for the deice truck to get near the nose of the airplane. The deice operator also did not properly inspect the aircraft to ensure that it was clean of ice. At the gate deicing procedures need to be reviewed to ensure that areas that are not easily sprayed from the bucket of the truck are sprayed with a hose from the ground. Additionally; deice operators need to ensure that the aircraft is clear of ice and not simply follow the script from rote.