loading Loading please wait....
Login

If you are a registered, please log in. If not, please click here to register.

Don't let ice spoil your next flight?

An icy and slippery apron or parking can result in a painful slide for you or your aircraft - slippery runways are even more dangerous... But don't forget that a few frozen drops of water in the fuel lines of the aircraft or a layer of ice no thicker than rough sandpaper on the wings can even be more killing!

Removing of visual detectable ice is easy if you know how. Aero-Sense has specific aircraft and runway de-icing products which melt the ice in a safe way.

Airframe Icing - before take-off
Ice on an airframe can be very dangerous: the ice will result in more drag- weight and reduce lift. The easy part is ice which you can remove when you’re still on the ground. AOPA sites: “A layer of ice no thicker or rougher than a piece of coarse sandpaper can reduce lift by 30 percent and increase drag by up to 40%.”

What are the best ways to deal with that?
First- thick layers of snow or ice are removed with soft brush or plastic scraper. Pay attention not to damage paint or window surfaces! After that a warm hangar can do wonders! When this method is used- pay attention that all the water from the melted ice is carefully removed if the outside temperatures are still negative.

Rinsing the aircraft with warm water to remove the ice can only be done if the ambient temperatures are positive. Otherwise new ice can be formed in places like hinges which can result in blockage of the flight controls!

The best method is of course the way airlines do it: taxi to the de-icing zone and have your aircraft rinsed with a heated mixture of glycols and water. Not only this method guarantees an ice-free airframe- depending on the de-icing product used- it also give's hold-over time. Since the de-icing product's stick to the surfaces- it will allow the aircraft to taxi and take off in icing conditions without picking up new ice.

Unfortunately this is a very costly process and most GA - airports are not equipped. A good- economic and available alternative is applying TKS- fluid. TKS -fluid is a mixture of glycol's and alcohols produced according AL-5 DTD4068 witch is normally used for TKS liquid which normally is used in the TKSWeeping wings in-flight ice protection system.

Just spray it on the ice and it will melt away. Depending on the ambient temperature- and the quantity of ice- typically 4 up to 6 liters of TKS-fluid are needed to de-ice a single engine aircraft. Undiluted TKS-fluid can melt ice down to -30°C. As TKS fluid is very liquid- there is no hold over time.

For larger GA aircraft - jet’s and turbo-prop’s- Aero-Sense has developed a mobile heated de-icing unit- the MHT1.000 DU30P. It consists of an insulated and heated (1.000 litre) container and pump. This unit is used for different types of deicing-fluids. The investment is low and it does exactly the same as the larger de-icing units used by airlines. The MHT 1.000 DU30P can be transported on a pick-up truck- small truck or trailer.

Airframe icing in - flight:
Icing can be very dangerous - no doubts about that. Specifically GA - aircrafts (unless Jet or Turbo-prop powered) usually fly at altitudes where icing conditions occurs frequently. As the temperature under ISAconditions drops with 2°C per 1000 ft of altitude- you can count that even in summer time you can have ice at FL100!

Although the TKS system from CAV- Aerospace was invented a long time ago- it's only the last decades it has become the leading de-icing system for GA. TKS has been successfully used on Cessna and Hawker Jets. Nowadays most Jets and Turbo Props use heated leading edges or inflatable rubber boots. These systems are proven and reliable- but are not evident to install on smaller GA-aircrafts. Piston engines don’t have bleed-air available and the installation of unreliable air-pumps is heavy in weight.

CAV -Aerospace sites that their system is widely recognized as the most effective ice protection available for today's General Aviation aircrafts. Effectively - apart from the many STC's - most of the GA- Aircraft producers install the TKS -system. Cessna- Piper- Cirrus- Diamond and Hawker have chosen for this proven system. Retrofits exists for Piper- Mooney- Cessna and Beechcraft.

The TKS system consists of laser -drilled titanium panels on the leading edges- slinger rings on the propeller(s)- a tank to hold the fluid and a small pump with a filter. The glycol based fluid is pumped through the laser drilled panels and removes ice or keeps the leading edges ice -free. The resulting run-back of TKS fluid on the surfaces of the wing keeps is a very positive side effect witch you will not have with boots or heated leading edges.

Aero-Sense produces the TKS -fluid according AL-5 DTD406B. Products are shipped all over Europe and fulfill the European packaging and labeling. Every batch is carefully inspected and filtered down to 0-5 micron. The extreme purity is very important since debris in the fluid could block the filter or the panels. Drums of 200 lit or smaller cans of 5- 10 or 20 lit are available.

TKS panels should be kept clean to prevent clogging of the laser drilled panels. Aero-Sense is also producing a Boeing D6-17487 certified insect remover safe for TKS panel cleaning. This is the only Insect remover with the Boeing certification: it will not corrode metals- paint or plexi. It contains no harmful chemicals such as solvents which could damage the TKS panels. The Insect remover is also suitable for windshield and airframe cleaning. Once you’ve tried it you’ll never takeoff without it!

The Boeing D6-17487 certified Insect Remover is available in 1 Lit. bottles with a trigger sprayer.

Ice in fuel:
Most fuels can contain small amounts of water. In kerosene - at ambient temperatures - microscopic droplets of water are suspended in the fuel. You will not see them and it's not possible to drain them.

Once the fuel becomes colder during climb- the capacity to retain dissolved water is reduced and the droplets of water will form ice crystals. Large jets and transport airplanes have heating systems so the kerosene never goes below 0°C. If your Jet or Turbo-Prop does not have a heating system check that the kerosene you use contains an Anti-Icing Additive. Aero-Sense produces an ASTMD4171- 03 Anti-Icing fluid “ICE -5”.

When dosed in -line during fueling it will mix with the water droplets and lower the freezing point. According the instructions of the airplane manufacturer- typically 0.10 up to 0.15% of ICE-5 has to be added. ICE-5 is available in 500 ml Aerosols- 1 litre dosing bottle with neck- 20 lit cans- 200 and 1000 ltr drums.

Runway and Apron de-icing:
Snow- ice and rime on roads can easily be removed with salt. Salt (Sodium Chloride) is a very cheap- effective and available product. For temperatures down to -10° salt does a perfect job. From an environmental point of view salt is also one of the best choices: it’s a natural product and non-toxic once diluted. Finally it comes out of our seas and goes back to the sea's.

Of course we all know salt has one major disadvantage: Corrosion. Once dissolved in water- the Chloride attacks most metals. Iron- Aluminum- Magnesium- etc. Although it’s not harmful for the paint as such- the brine formed after melting the ice has the capacity to enter the smallest crack or space and find its way to the metal surfaces. Once arrived at the metal the salt will start it's highly destructive job.

That's why salt has been banned since a very long time from airports.
For runways and apron’s- Aero-Sense is offering granular - dry- de-icing product. This product is similar to the liquid- but since it's in granular form it is much easier to spread- dose and store. Aero-Sense’s Grandi-U5 Runway deicer can be applied in the same way common salt is dosed - by hand- salt-spreader.

The Grandi-U5 solid runway de-icer is a ASTM1431B certified aircraft safe alternative for deicing salt which melts away rime- ice- snow and works effectively down to -10°C.

Aero-Sense delivers de-icing products in 25 kg bags- 1.000 kg bulk bags or full truck loads.

AERO-SENSE
Aero-Sense is a Belgium based company producing Anti-Icing products and specific chemicals for the aeronautical industries. Production- packaging and labeling is according European Health and Safety regulations. Every delivery comes with the technical data-sheets and certificate. Deliveries throughout Europe are prompt and right on time.

Contact us for your local supplier. Check our website or contact us for more information!

Our staff speak English - Dutch - French and German!

Contact: AERO-SENSE
Delaerestraat 41-
8800 ROESELARE 
BELGIUM
Tel. 0032 51 26 80 00
Fax. 0032 51 46 79 23
WWW.AERO-SENSE.COM
INFO@AERO-SENSE.COM 


Related Articles