High Wing -
Sfc wind, so you can land into it
Alert ground rescue services so they can get there asap
Scramble SAR
Had an a/c went in off an adjacent a/f a few years ago. As it happened he didn't have time to call maydaybut he'd not reported airborne & I just "had a feeling". Quick phone call, found out he'd gone in. Had a Lynx on-site in about 2 mins, SAR in about 5, both occupants in hospital within 30mins.
Also had a Practice Pan more recently - C150, rough-running engine & wanted vectors back to base, about 12 miles. Pointed out a runway on his left by about a mile & PFL commenced.
I'm not in anyway saying call ahead of flying the plane, but I am saying that ATC is a huge resource you can call on. Particularly with single-crew ops, think of us within the CRM envelope.
ap