B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R Material No. 03-001 USA MIL-PRF-7870 MINERAL OIL (LOW TEMP) (Ref. 20-31-00)
Material No. 10-001 USA AMS 1424
DE-ICING FLUID AEA/ISO TYPE I ISO 11075
(Ref. 20-31-00)
Material No. 10-003 USA AMS 1428
ANTI/DE-ICING FLUID AEA/ISO TYPE II ISO 11078
(Ref. 20-31-00)
Material No. 10-004
ANTI/DE-ICING FLUID TYPE IV (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
10-11-00-555-001 24-41-00-861-002 24-41-00-862-002
32-00-00-481-001 12-31-12-991-002 12-31-12-991-003
3. Job Set-up
__________ Subtask 12-31-12-660-056
Parking Procedure (Not More Than 2 Days)Energize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External PowerInstallation of the Safety Devices on the Landing GearsFig. 201Fig. 202
A. Different Types of Anti-Icing Fluids.
(Ref. Fig. 201/TASK 12-31-12-991-002, 202/TASK 12-31-12-991-003)
R CAUTION : DO NOT MAKE THE DE-ICING FLUID IN TANKS HOT TOO MANY TIMES OR_______
R FOR LONG PERIODS. IF YOU DO, THE QUANTITY OF WATER IN THE FLUID
R WILL DECREASE AND THERE WILL BE A POSSIBLE DEGRADATION OF THE
R FLUID PERFORMANCE.
R You usually apply anti-icing fluids cold directly onto clean aircraft
R surfaces.
R Typical anti-icing fluids are:
R - Newtonian fluids (ISO or SAE or AEA Type I),
R - Mixtures of water and Type I fluid,
R - Non-Newtonian fluids (ISO or SAE or AEA Type II or Type IV),
R - Mixtures of water and Type II or Type IV fluid.
R Following manufacturer's guidelines to increase the temperature of
R de-icing and anti-icing fluids.
R For Type I fluids, water loss may cause unwanted aerodynamic effects.
R For Type II or Type IV fluids, thermal exposure and/or water loss may
R decrease fluid viscosity which causes lower holdover times.
R One or more of the conditions that follow can decrease fluid
R performance:
R - not much fluid used,
R - trucks that do not operate with heating system on for extended periods
R of time,
R - high temperatures in fluid tanks,
R Guidelines for the Application of Fluid/Water Mixtures (Minimum Concentrations) as a Function of OAT Figure 201/TASK 12-31-12-991-002
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R 1 1
12-31-12Page 205
1 1 Nov 01/04 1 1 1CES 1
R Guideline for Possible Holdover times for Fluid Mixtures as a Function of Weather Conditions and OAT R Figure 202/TASK 12-31-12-991-003- 12 (SHEET 1)
R Guideline for Possible Holdover times for Fluid Mixtures as a Function of Weather Conditions and OAT R Figure 202/TASK 12-31-12-991-003- 22 (SHEET 2)
-high temperatures in water tanks which directly touch the fluid tanks (no insulation between tanks).
(1)
Type I
(a)
The primary function of this fluid is to prevent refreezing when no precipitation conditions occur.
(b)
Newtonian fluids (Type I) have a low viscosity that only changes with temperature.
(2)
Type II or Type IV
(a)
The primary function of these fluids is to prevent refreezing when precipitation occurs.
(b)
Non-newtonian fluids (Type II or Type IV) have a viscosity that decreases with increased airflow over the fluids.
4. Procedure
_________ Subtask 12-31-12-660-058
A. De-icing with the Aircraft Parked in an Open Area (the aircraft engines are stopped).
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