Recently learned that 50% of men surveyed believe they could land a commercial aircraft in an emergency, and knowing this has helped me understand a lot of the emails I get at work.
@shironeko @MostlyHarmless There have been cases of exactly this.
Doing so without instructions is a very different problem.
Note that none of the listed entries are large commercial aircraft. Which doesn't necessarily mean it wouldn't work, but that present precautions have presumably sufficed (or that everyone died long before it came up).