Type III De-icing Fluid - Color?

[Cessnaflyer]

Disagree. Example - Aircraft in hangar, clean airframe. There is no reason you would apply type I prior to type iv, and I am yet to see anything in the H.O.T.'s, AFM or deice fluid manufacturers procedures that say otherwise.

When I was working ramp the de-ice fluid company's training manual said always type 1 before 4.

 

[amorris311]

When I was working ramp the de-ice fluid company's training manual said always type 1 before 4.

For type 4 that's true. Type 3 not so much.

 

[Cessnaflyer]

For type 4 that's true. Type 3 not so much.

Yeah type 3 doesn't apply. It was a couple years ago but I think it was because type 4 wouldn't shear off before rotation speed on many aircraft.

 

[MikeOH58]

To be clear, I am talking about applying type iv while inside the hangar prior to pullout.

 

[Cessnaflyer]

To be clear, I am talking about applying type iv while inside the hangar prior to pullout.

I am as well. All applications of type 4 had to be preceded by type 1 no matter how clean and warm an airplane was. This was a manufacturers stipulation and not company as well.

 

[MikeOH58]

Which manufacturer?

 

[Cessnaflyer]

I'm pretty sure it was kilfrost.

 

[Autothrust Blue]

To be clear, I am talking about applying type iv while inside the hangar prior to pullout.

Sounds overly messy, slippery, and noxious.


Sent from Seat 3D

 

[MikeOH58]

Quite the opposite. Mechanics apply with a hand sprayer, essentially zero waste and little drip. Wings and tail only, never had a full airframe anti ice in the hangar. At $17+/gallon retail from the FBO's, if you have a private hangar and support crew to make this work it is a great financial option.

 

[amorris311]

Quite the opposite. Mechanics apply with a hand sprayer, essentially zero waste and little drip. Wings and tail only, never had a full airframe anti ice in the hangar. At $17+/gallon retail from the FBO's, if you have a private hangar and support crew to make this work it is a great financial option.

How do you determine holdover times? I would think you would be going back to get hand waxed before y even left the hangar.

 

[Jimmy_Norton]

How do you determine holdover times? I would think you would be going back to get hand waxed before y even left the hangar.

It should start at the beginning of the application, but somehow I don't think that is being taken into account for this operation....

 

[amorris311]

It should start at the beginning of the application, but somehow I don't think that is being taken into account for this operation....

That's what I'm trying to get at.

 

[MikeOH58]

How do you determine holdover times? I would think you would be going back to get hand waxed before y even left the hangar.

Same as you would outdoors...HOT begins at start of application.

 

[MikeOH58]

It should start at the beginning of the application, but somehow I don't think that is being taken into account for this operation....

Not sure what you are trying to imply or why...?

 

[amorris311]

Same as you would outdoors...HOT begins at start of application.

I know how the rule works. You said they apply with a hand sprayer. Are they on cherry pickers while they do this? It would seem like it takes a long time to apply that way and that would lead to going past your holdover time. That's all I'm trying to get at. It's hard for me to visualize this I guess.

 

[MikeOH58]

Cherry picker for the tail, not necessary for the wings. Wings and tail are completed in less then 30 minutes.

 

[amorris311]

Cherry picker for the tail, not necessary for the wings. Wings and tail are completed in less then 30 minutes.

Am I correct in assuming you don't have long taxi times to the runway? If it saves a buck and it creates less waste then I'm all about it. I guess I learn something new everyday.

 

[Pilotforhire587]

No one has mentioned it yet, but you can't put II, III or IV on without a base of I first.

What you talkin' 'bout Willis!?

It may be but I have never heard of that. I am never in a hangar, usually on a snowy or icy ramp so its never been an issue, but I have never heard a rule against it.

 

[Maurus]

I know how the rule works. You said they apply with a hand sprayer. Are they on cherry pickers while they do this? It would seem like it takes a long time to apply that way and that would lead to going past your holdover time. That's all I'm trying to get at. It's hard for me to visualize this I guess.

Holdover times are pretty much a 121 thing. It isn't a bad reference but in the end is not required for 91 or 135.

 

[Jimmy_Norton]

Is the sprayer you're using made specifically for type 4? If not, the fluid may be damaged, and not function like it is supposed to.