Executors don't appoint executors. The court appoints them.
I am assuming that the oldest executor will take charge
The remaining executor can submit a resignation to the court and request that a successor be appointed.
Any executor must be appointed by the probate court. If joint executors are named in the Will they must petition to be appointed by the court. They can only be removed by the same court.
The remaining executor takes over, or the court will appoint a new one. No will shall fail because of the lack of a named executor, the court will simply appoint one.
If a co-executor dies, the surviving co-executor becomes the sole executor. Papers issued by the probate court that state that there are two co-executors have to be changed to show that there is only one now. The procedure to do that is set by each particular court. You also have to see if the will says something different. Sometimes a person wants 2 or more people as executors at all times. That person might appoint coexecutors and provide that in the event of the death of one coexecutor another person shall be added.
An EXECUTOR is named in the case of the existence of a will. (testate) An ADMINISTRATOR is named by the court in the case of no will (intestate) The will of the deceased (if it exists) will be the guide which the court follows. There is no limit to the number of executors a testator may appoint in his/her will. See the related links below for the procedures when there are more than one executors and what happens when one of several executors dies, is removed or resigns.
what hanned if the executor of wil is sick
The court will appoint an executor. That is often an attorney or a bank.
The court will appoint an executor and the estate will be subject to the intestate laws of the jurisdiction.
Happens all the time. No big deal. The executor, whomever it is, fulfills the duties are required by law. And if no one 'wants' to be the executor, the court will appoint someone to do it, usually an attorney or a bank.
If the named executor has died then the court will appoint an executor. An interested party can petition to be appointed executor.
They become part of his estate. The executor of his estate would file the claim against the first estate.