text: how can big chunk of ice fall from sky from commercial airplane? a big chunk of ice the size of a small microwave oven fell from the sky throuogh the roof of a school gym a few days ago somewhere in u.s.a.  it was confirmed to have been released from an aircraft. there is a leak in the door leading from where they pump it to the tank and this water is clean some times blue from chemicals but not waste. the leak gathers up and changes to ice due to the low temps at those elevations then it breaks loose and falls happens not alot but enough you hear about it