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Large aircraft do not require FSII as they are usually equipped with electric fuel line heaters or fuel/oil intercoolers that keep the fuel at an appropriate temperature to prevent icing. However, if the fuel heaters are inoperable, the aircraft may be still be declared fit to fly, if FSII is added
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that does not appear in droplet form. As an aircraft gains altitude, the temperature drops and the fuel's capacity to hold water is diminished. Dissolved water can separate out and could become a serious problem if it freezes in fuel lines or filters, blocking the flow of fuel and shutting down an
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as it is pumped into the aircraft. The mixture of FSII must be between 0.10% and 0.15% by volume for the additive to work correctly, and the FSII must be distributed evenly throughout the fuel. Simply adding FSII after the fuel has been pumped is therefore not sufficient. As aircraft climbs after
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allow FSII injection to be turned on or off so that one fuel truck can service planes that do require FSII as well as planes that don't. Line crew, however, must be able to deliver FSII when it is needed.
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Prior to 1994, Prist was regulated under the MIL-I-27686E standard, which specified use of EGMME, but subsequently came under the MIL-DTL-85470B, with use of less hazardous DEGMME with higher
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takeoff, the temperature drops, and any dissolved water will separate out from the fuel. FSII dissolves itself in water preferentially over the jet fuel, where it then serves to depress the
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and can absorb water directly from moisture in the air. Since some brands of FSII are highly toxic, a crew member must wear gloves when handling it undiluted. Many
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of water to -43 °C. Since the freezing point of jet fuel itself is usually in this region, the formation of ice is now a minimal concern.
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by the EPA, but as the requirement changes raised the certification costs, DEGMME has no official pesticide certification. DEGMME is a potent
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It is extremely important to store FSII properly. Drums containing FSII must be kept clean and dry, since the additive is
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315:"Professional Grade Paint Products - Commercial Paint Thinner Manufacturers | Startex Chemicals"
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that prevents the formation of ice in fuel lines. FSII is sometimes referred to by the registered,
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FSII was thought to retard the growth of microorganisms eventually present in the fuel, mostly
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to plastic and rubber parts, but this has since been removed from labelling.
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172:(DEGMME, 2-(2-methoxy ethoxy) ethanol, APITOL 120, methyl carbitol,
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138:. Jet fuel can contain a small amount of dissolved
48:. Unsourced material may be challenged and removed.
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155:Chemically, FSII is an almost pure (99.9%)
108:Learn how and when to remove this message
159:(EGMME, 2-methoxy ethanol, APISOLVE 76,
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233:is sometimes used as an alternative.
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241:FSII is an agent that is mixed with
46:adding citations to reliable sources
170:diethylene glycol monomethyl ether
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157:ethylene glycol monomethyl ether
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33:needs additional citations for
218:EGMME had been certified as a
207:utilizing microorganisms" or "
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57:"Fuel system icing inhibitor"
121:Fuel system icing inhibitor
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258:Storage and dispensing
200:Pseudomonas aeruginosa
133:genericized trademark
203:bacteria, known as "
194:Cladosporium resinae
151:Chemical composition
127:) is an additive to
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213:microbial corrosion
168:); or since 1994,
295:on 8 January 2006
231:isopropyl alcohol
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98:November 2016
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297:. Retrieved
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40:Please help
35:verification
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299:29 December
264:hygroscopic
205:hydrocarbon
186:flash point
275:References
229:Anhydrous
197:fungi and
174:CAS number
161:CAS number
68:newspapers
220:pesticide
329:Category
243:jet fuel
209:HUM bugs
178:111-77-3
165:109-86-4
237:Purpose
224:solvent
82:scholar
145:engine
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140:water
136:Prist
89:JSTOR
75:books
301:2005
268:FBOs
125:FSII
61:news
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