A few years back flying to Busuanga, Philippines on a SEA Air Let 410 with wife, young daughter, SiL and year-old grand daughter. Runway at Busuanga is 50/50 concrete/dirt. Landing OK, stopped on concrete and taxied to "terminal".
Two weks later, revving the engines against the brakes, plane jumping around a bit and then, yeeeeehaaw. All good. Not good was 20-30 cm height difference between dirt and concrete and off course we were not airborne by then, but we quickly were after hopping of the concrete and bouncing of the dirt.
I knew this. I also knew that my daughter was not totally comfortable with small aircrafts so I looked at her when said bouncing occured. Never thought human eyes could possibly become that big! Lovely place the airport at the Yulo King Ranch.
Per