First off i operate into AMS on a 737 at least half a dozen times a month and have done so for 10+ years.
This tragic incident will come down to 1 of 2 things either
Loss of power on both engines, due to bird strike < less than 5%
Pilot error
This was a modern aircraft flying into one of the world best airports on a day when weather wasn't an issue,it appears to be either a line check or early line training sector with jump seat safety pilot.
AMS atc is very switched on and flows beautifly if your up to speed, but in early line traing sectors it can be too much for some and 170knts on final is the norm, but you need to get configured quickly thereafter and you should be stable by 1000ft aal (about 3.3miles) and must be by 500ft aal (1.7miles) otherwise you must go around, this went badly wrong inside 5 miles.
Forget all the bollocks on sky & the well intended but still duff stuff on here, Turkish is sound airline and i would happily sit in the back of one tomorrow, its probably no more than a tragic error in which thankfully most lived
RIP Guys/Girls