"The instrument strings are tuned."
Translation:Ua kī nā ʻaha o ka pila.
A stative verb tells the state or condition of something that is being described: Ua wela ka pīpī kū - The beef stew is hot. Ua nani ka māla pua - The garden is beautiful. Ua mākaukau ka mea 'ai - The food is/was ready.
Since the strings of the uke are in the state of being tuned, it's a stative sentence. If you have the book 'Ōlelo 'Ōiwi by Cleeland, see page 164. Aloha