I once had a situation where a medium cargo aircraft went around because of a suspect undercarriage problem, at night!!.
Captain asked for a fly by for visual inspection, obviously aware of the difficulties.
Fortunately I happened to be working a very nice police man at the time and asked if he, his heli and night vision camera could position themselves north of the runway to assist. Job done. Able to say to cargo A/C that everything appears normal. A/c subsequently landed safely.
To answer your question as far as I am aware the situation you describe would be very unlikely, since you can only say "Well it looks OK but I cannot be 100% certain".
If on the other hand you saw something that looked odd, you would put on the appropriate category of emergency, probably A/C accident imminent, wait for services to arrive then get the said A/C in.