Jet exhaust works too for a stubbornly icy canopy/windscreen. Isn't really effective on the tops of the wings though
Finally! A chance to tell a story from my regional days!
So I met this girl (thanks Jetcareers) and couldn't wait for my parents to meet her. The plan was to non rev from LIT-ATL-BWI where we'd meet my parents. Shuttle America flight was full to ATL. Wife to be ends up getting the last seat in the back and I ride up from tin the jumpseat. A cool fall morning and overhang is going well. A light layer of frost covers everything, but that's nothing to stop a professional operation...
...unfortunately we were flying Delta connection out of Little Rock. Turns out the deicing truck was stuck in park, thus rendering it inoperative. Resulting is one of those situations where plan A is out the window and unfortunately plan B and C end up being even worse.
So plan B was to just hang out on the plane and wait for the sun to melt the frost off the plane. Not a terrible plan, though it would certainly take a while. Shortly after sunrise the temperature was supposed to get above freezing.
So while all three of us were hanging out up front, very slowly executing plan B we heard a call come over operations freq.
"Mercury XXXX, this is Flagship XXXX."
Shuttle America crew ignored it.
"Mercury XXXX, this is Flagship XXXX."
Finally curious, they answered "Flagship XXXX, this is Mercury XXXX, go ahead."
"So...bro...like...we're a high engined jet, and you're a high winged jet. You're a low engined jet and we're a low winged jet...so like...we could probably melt the ice off you guys, and then you could melt the ice off you."
Mercury crew: "hahaha"
*minutes pass*
Flagship crew: "So bro...what do you think?"
Mercury crew: "There is no way we are ok with that."
We both end up waiting for the sun to bake the frost off both aircraft and then we end up setting off for ATL at the same time. We were both HOURS late, but we both made it.