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Pilot’s Operating Manual
Section VI Sub-section 1
GROUND HANDLING
P/N 140-590032-0007
Revision A4: Sep, 2010
If the airplane is in a configuration different from that stated previously, inspect and clear all hinges and
mechanisms of frozen deposits before attempting to alter the configuration.
The period of time an operator can remain on the ground (hold over time) after application of any
de-ice fluid is dependent on many factors, including Outside Air Temperature, type of precipitation, type
of fluid applied and concentration of fluid.
High wind velocity and jet blast may cause a degradation of the protective film, thereby shortening the
protection time considerably.
Refer to Hawker Beechcraft Corporation approved 125/Hawker Chapter 20 Standard Practices Manual,
Section 20-95-101 (pages 1 and 2) for airplane-specific approved de-icing fluids.
The FAA publishes a Flight Standards Information Bulletin for Air Transportation (FSAT) that provides
generically approved Type I, Type II, Type III and Type IV de-icing fluids, guidelines for application
procedures, charts for Holdover Times, and other related information.
Holdover time tables, obtained from www.faa.gov, search "HOLDOVER TIME TABLES", shall only be
used as part of an approved ground-deicing program. When the website cannot be accessed or
questions arise, contact FAA Flight Standards, Washington D.C. at 202-267-8166 or Hawker Beechcraft
Corporation at 1-800-429-5372 or 316-676-3140.
De-icing is the removal of ice, frost, and snow from the airplane’s exterior after it has formed.
Anti-icing is a means of keeping the surface clear of subsequent accumulations of ice, snow and frost.
Removal of these accumulations is necessary prior to takeoff. Airfoil contours may be altered by the ice
and snow to the extent that their lift qualities will be seriously impaired.
Ice and snow on the fuselage can increase drag and weight.
Prior to take-off the pilot in command must be satisfied the aircraft is clear of frost, snow, or ice within
the limitations stated in the Aircraft Flight Manual, Section 2.
If the holdover time (reference a current copy of the FSAT) is exceeded and visual/tactile investigation
of the flight surfaces is not possible, the aircraft should be returned for further treatment with de-icing
fluid prior to take-off.
SNOW REMOVAL
CAUTION:
CARE MUST BE TAKEN WHEN REMOVING SNOW FROM AREAS WHERE VORTEX
GENERATORS ARE INSTALLED.
The removal of frozen deposits by chipping or scraping is not recommended.
The recommended removal of snow is to brush it off with a squeegee, soft brush, or mop. Care must
be exercised not to damage any components that may be attached to the outside of the airplane, such
as antennas, vents, stall warning vanes, etc.
Remove loose snow from the airplane before heating the airplane interior. At low temperatures, the
snow may melt and refreeze to build up a considerable depth of ice.
If the airplane has been hangared and snow is falling, coat the airplane surfaces with an anti-icing
solution.
Snow falling on the warm surface will have a tendency to melt, then refreeze. After snow has been
removed from the airplane, inspect the airplane for evidence of residual snow.
