NOTE: Aircraft Serials w/ Perspective+ avionics only When the TKS Anti-Ice System is installed on the Cirrus SR22 Serial Numbers 4433 and subsequent, this POH Supplement is applicable and must be inserted in the Supplements Section of the Pilot’s Operating Handbook. This supplement is not included with the purchase of a POH and must be ordered separately. Note: This item is drop-shipped to you directly from our vendor.