I thought that the tactile check was implemented by the FAA for all part 121 ops. So every operator would have to do a tactile check by an approved person before you may takeoff if you have exceeded your hold over time. If no one is available than you must go back and de ice again. If someone is avalaible than they must touch the surface of your aircraft and if they say it is clean you get 5 more minutes. This can continue as long as the aircraft is clear of contamination.

So is everyone else's ops that way?

As for the Delta and CAL flights maybe they were within their hold over times which then would not require a tactile check. As for the company I work at we do not have hold over times for PL so if we take off with it we would have to have a tactile check since no hold over times. I don't even think we are allowed to operate in PL. I will have to look that up.