Dadna
Dadna is on the east Coast of the UAE approx 45KM north of Fujairah. This area has been developed extensively in recent years and I doubt you will find any evidence of a crash site or anything else.
We go over to the east coast on diving trips and i will ask a friend of mine who was over there in the 1970's building the road infrastructure.
You can see Dadna on Google Earth. At one end of the Beach is Sandy beach Motel and the other end is Le Meridien. This looks like the only landing spot.
Good luck
Paul