Thank you brasmelzuit.
I now live in Delta Sari Baru, (Waru) and I am just guessing at the height the planes are flying. (Mostly B737s and MD 80s and 90s from Lion Air.
So they are flying at 883 feet, but it seems so much higher from the ground where I am standing.
Again, I am just guessing that the distance from Waru to touchdown at Juanda is 5 km. It could be more.
Thanks any way.