What did Chuck do wrong, other than being in an airplane?
Chuck landed blindfolded.
He's using a hood, a device worn like a visor which blocks part of your vision so you can only see the instrument panel and nothing outside. Pilots practicing instrument approaches in good weather wear such a device to simulate poor visibility, forcing them to fly the approach on instruments alone.
Aside from a few stunts that have been performed here and there, pilots never touch down using only instruments. The approach can only be flown down to a certain point called minimums. At that point you must be able to see the runway (or the approach lights) to continue. Otherwise you have to fly the "missed approach procedure."
So when practicing with a hood like this, the instructor will tell the student when to raise the hood, simulating catching sight of the runway. Chuck didn't, and continued past minimums into a landing without being able to see. In real life this would almost certainly result in a crash.
He landed with the hood on resulting in him being unable to see the necessary visual reference requirements before going below the instrument approach minimums. (Ref: 14 CFR Part 91.175
As people of previously pointed out, the instructor is surprised that the student pilot landed the aircraft completely under the hood, without any visual reference to the runway, as is required by §91.175 for descent below minimums specified in an instrument approach. Aside from Cat II and Cat III ILS approaches, which would be completely out of the scope of a private pilot, all other instrument approaches require there be minimum altitudes and visibility requirements to allow a pilot to descend to a runway and land. Attempting to descend below minimums and/or land under reference only to instruments is extremely dangerous and has killed people.