Originally Posted by
WineCountryUA
If looking at NH fare class , G, E, N are PremEcon
Per UA, NH fare class are

Expert Mode is not useable for seeing partner award space. As recommended in the thread's wiki, use the award search for the segment to determine award availability for partner.
If looking at a UA codeshare of NH operated flight, the UA fare class for Prem Econ will be O, A and R. And the award class will not show. You will not be able to use PlusPoints on a codeshare, it must be converted to a native NH flight number.
Thanks -- I understand that -- what I was asking is if .bomb is useful for showing upgrade availability on partners for PP (I'm guessing it's not lol) -- as you pointed out when I search on UA I get A class for PE available which is what I want to purchase -- but I am guessing from your post that the only way to see if there is upgrade space available is to buy the ticket, call UA to convert to native flights, and then see if it clears using the UA PP upgrade tool?