Exactly right, how do we do know in Iberia, engineiring gets on an elevated platform and looks at the wings to determine that, then aply the appropiate deicing fluid, if the crew is in the airplane they inform the captain before doing it. I havenīt flown to Boston yet, is a new destination for us, we started in june I think, but I can tell you that in Chicago and NY American Airlines provides the maintenance for IB, and they are damn good professionals, no cowboys here. I say again, I never preflight the airplanes parked nearby, but BA colleague thank you for your input, it is appreciated anytime, please do not blow it in public.