"notable mistake" is correct and usable in written English.
You can use it when referring to a mistake that is worthy of note or has significant or far-reaching consequences. For example: "The CEO made a notable mistake when overlooking the potential liabilities of the deal."
Throughout the second half, the Giants' slapdash offense — absent the running game that has historically been its ballast — was one turnover or another notable mistake from liberating the Dolphins from their winless state.
A notable mistake is also observed, that is, both Kuijken and Grumiaux played an extra D4 note, which is not in the original score.
Investigators got a break when the alleged pranksters made a notable mistake: They started bragging.
Woods made, at most, two notable mistakes.
And if in this period of rapid change, you're not making some notable mistakes along the way, you're certainly not taking enough business and career chances".
They are avoiding Greece, the country where the euro zone crisis began, and the home of one of their more notable mistakes, a losing bet in 2010 on the debt of a Greek casino operator in an earlier European fund.
And he also made some notable mistakes.
One of its most notable mistakes was giving Dallas-based Ebola nurse Amber Vinson the all-clear to take commercial flights to and from Cleveland -- trips that occurred mere hours before she began to show symptoms from Ebola.
In fact, if you do a little research, you can usually learn about some of the more notable mistakes that individual made throughout his or her life.
Time will tell whether Wednesday's gaffe will join the roll call of notable playoffs mistakes.
The game was also notable for a mistake by referee Graham Poll, who gave three yellow cards to Croatian defender Josip Šimunić, failing to send him off after his second offense.
