30 hours in the last 3 years are required. Attested copies of your logbook showing these pages, attested copy of current RTR(A), DD of Rs 5000 or 10,000 depending on the validity you want in your renewed RTR(A).
My question is this - Do I have to post the filled COP 23 to the center from where the RTR(A) was issued, which is WPC Kolkata in my case or to Delhi?
Also, if it is Kolkata in whose favour should I draw the SBI DD? Kolkata or Delhi?