I'm not bashing you, just offering my viewpoint on the situation.
Dear pilot of N480ND, thanks for racing me to the taxi way, then doing a 15min runup...Heck, even the tower asked you how long you were going to take.
I'm not sure what the 'und' runup enlists, but honestly, 15min?
Fifteen minutes? That might be a bit of an exaggeration. Also, why would you (in general) be talking to Tower during the run-up? Was that a typo, or did you make that up?
As for the delay on the runway. It was pretty much a minute long... They were cleared for take off on 17L, taxied on, and just fricken sat there until ATC prompted them to GTFO again.
oh, and stopping on the active for a while isn't the brightest move either.
If all that happened was the airplane paused on the runway for a bit, then proceeded and completed the takeoff after that (without any interruptions like stopping again), then the pause was most likely due to this:
UND takeoff profile in the Seminole calls for stabilizing both engines at 20" manifold pressure prior to takeoff power and brake release. Depending on how many flights the pilot of 580 had done in the Seminole, this can take a little bit if you're unfamiliar with the airplane.
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...you'd think you'd be a better pilot by the time you get into the semi...
What happens, now, is that students go from the C-172 for 323 straight to the Seminole for 325. I'm sure that you realize that these two airplanes are not the same. You transition from a single-engine airplane with a fixed-pitch propeller to a complex multi-engine airplane with a constant-speed propeller. You're learning new things and dealing with systems that you haven't seen or done during your previous flight training, and there's nothing to help to ease the transition from the C-172 to the Seminole like flying the Arrow for 323.
As you can see, there are some things that you didn't know, yet your complaints were based off of what you thought. Even if the run-up did take anywhere near fifteen minutes to complete, do you know why? Do you know why the Seminole was "racing you" to get to the taxiway? Do you know if the student deliberately didn't turn the airplane during the run-up, or if he just forgot to?
Of course, there is a chance that the reasons behind this situation were the ones that you were complaining about (the airplane purposely trying to get ahead of you, so that the student can do a very long run-up without turning the airplane to the side to try to piss you off and make you waste your money), but you don't know this.
My intention is not to bash you, but to help to open your eyes a little. Don't let your perceptions (and your emotions) get the best of you.
And hey, it could've been a fouled magneto or something on the runup, you never know...although it's definitely a dumb move not positioning the aircraft to keep the propwash away from the taxiway behind the aircraft.
