How to file return as executor of a deceased person

Sachdev Kajal (Service) (30 Points)

29 December 2017  

Mr. X has expired on 9th December,2017. He was into construction line & the project is going to end in next 6months. Can the business be transfered to Executor (Status AOP)???

If yes is there a need to apply for New PAN? If yes, can we use the name of Mr. X on PAN Card?

Is there a need to update the new PAN details on GST Site?

Kindly guide. 

Thanks in advance.