Specifications

SECTION IV
OPERATING INFORMATION
MODEL 560
GROUND DEICE/ANTI-ICE OPERATIONS
During cold weather operations, flight crews are responsible for ensuring the aircraft is free of ice
contaminants.
Ground icing may occur whenever there is high humidity with temperatures of +10°C (+50°F) or
colder. Type I deice, and Type II or Type IV anti-ice fluids may be used sequentially to ensure compliance
with FAA regulations (clean wing concept) requiring critical component airframe deicing and anti-icing.
NOTE
It is recommended that flight crews review the following publications for expanded
deice and anti-ice procedures:
• Cessna Maintenance Manual Chapter 12.
• FAA Advisory Circular AC120-58 (large aircraft), dated September 30, 1992 or later.
• FAA Advisory Circular AC135-17 (small aircraft), dated December 14, 1994 or later.
• Cessna Citation Service Letter 560-30-08, dated May 29, 1998 or later.
DEICING/ANTI-ICING PROCEDURES (TYPE I, TYPE II, AND TYPE IV FLUIDS)
ONE STEP DEICING - Type I fluid is used to remove ice, slush and snow from the aircraft prior to
departure, and to provide minimal anti-icing protection as provided in the Type 1 holdover timetable (refer to
applicable service letter).
TWO STEP DEICE/ANTI-ICE - May be used to ensure the aircraft remains clean after deicing. Type II
or Type IV fluid is used to provide longer term anti-icing protection as provided in the Type II or Type IV
holdover timetable (refer to applicable service letter).
CAUTION
TYPE I AND TYPE II, AND TYPE IV FLUIDS ARE NOT COMPATIBLE AND MAY NOT
BE MIXED. ADDITIONALLY, MOST MANUFACTURERS PROHIBIT MIXING OF
BRANDS WITHIN A TYPE.
Line personnel should be supervised by the PIC or SIC to ensure proper application of deice or
anti-ice fluids.
NOTE
The first area to be deiced/anti-iced should be easily visible from the cabin/cockpit and
should be used to provide a conservative estimate for unseen areas of the aircraft
before initiating takeoff roll.
Holdover timetables (refer to applicable service letter) are only estimates and vary depending on many
factors to include temperature, precipitation type, wind and airplane skin temperature. Holdover times are
based on mixture ratio. Times start when the last application has begun
.
Guidelines for holdover times anticipated by SAE Type I or Type II, or Type IV, and ISO Type I, Type
II, or Type IV fluid mixtures are a function of weather conditions and outside air temperature (OAT).
CAUTION
• AIRPLANE OPERATORS ARE SOLELY RESPONSIBLE FOR ENSURING HOLDOVER
TIMETABLES CONTAIN CURRENT DATA.
• TABLES ARE FOR USE IN DEPARTURE PLANNING ONLY AND THEY SHOULD BE
USED IN CONJUNCTION WITH PRETAKEOFF CONTAMINATION CHECK
PROCEDURES.
I 4-28 Configuration AA 56OMB-01