AIRCRAFT GROUND DEICING/ANTI-ICING

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AIRCRAFT GROUND DEICING/ANTI-ICING

• Jeanne Cook - Bankair

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135.227 (b) No certificate holder may authorize
an airplane to take off and no pilot may take off
an airplane any time conditions are such that
frost, ice, or snow may reasonably be expected to
adhere to the airplane unless the pilot has
completed all applicable training as required by
135.341 and unless one of the following
requirements is met
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• A pre-takeoff contamination check, that has been
  established by the certificate holder and
  approved by the Administrator for the specific
  airplane type, has been completed within 5
  minutes prior to beginning takeoff. A pre-takeoff
  contamination check is a check to make sure the
  wings and control surfaces are free of frost,
  ice, or snow.

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(2) The certificate holder has an approved
alternative procedure and under that procedure
the airplane is determined to be free of frost,
ice, or snow.
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(3) The certificate holder has an approved
deicing/anti-icing program that complies with
121.629(c) of this chapter and the takeoff
complies with that program.
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PRECONTAMINATION CHECK ORALTERNATE PROCEDURE
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5 MINUTES
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FAA TYPE III Holdover Time Guideline  Table 3. 
FAA Guidelines for Holdover Times SAE Type III
Fluid Mixture as a Function of Weather Conditions
and OUTSIDE AIR TEMPERATURE.  CAUTION  THIS
TABLE IS FOR DEPARTURE PLANNING ONLY AND SHOULD
BE USED IN CONJUNCTION WITH PRETAKEOFF CHECK
PROCEDURES.
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THE RESPONSIBILITY FOR THE APPLICATION OF THESE
DATA REMAINS WITH THE USER.      Use light
freezing rain holdover times if positive
identification of freezing drizzle is not
possible   This column is for use at
temperatures above 0C (32 F) only    Snow
pellets, ice pellets, heavy snow, moderate and
heavy freezing rain, and hail.
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  CAUTIONS THE TIME OF PROTECTION WILL BE
SHORTENED IN HEAVY WEATHER CONDITIONS.  HEAVY
PRECIPITATION RATES OR HIGH MOISTURE CONTENT,
HIGH WIND VELOCITY, OR JET BLAST WILL REDUCE
HOLDOVER TIME BELOW THE LOWEST TIME STATED IN THE
RANGE.  HOLDOVER TIME MAY BE REDUCED WHEN
AIRCRAFT SKIN TEMPERATURE IS LOWER THAN OAT. SAE
TYPE III FLUID USED DURING GROUND
DEICING/ANTI-ICING IS NOT INTENDED FOR - AND DOES
NOT PROVIDE - PROTECTION DURING FLIGHT. 
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Looking at the Active Frost or the Freezing Fog,
you can easily determine the time benefit of
being able to use a HOT
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Our goal is to have an alternate procedure that
allows the PIC to be the person trained in
deicing an aircraft
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RACCA has been working with the FAA for two years
regarding this issue. The FAA is working closely
with us in looking at sample programs. The FAA
states that we should have an approved alternate
program by this winter season.
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www.faa.gov/other_visit/aviation_industry/airline_
operators/airline_safety/media/FAAHOT2006-2007.doc
- 2006-11-13