Hey there. I'm currently working on an excel spreadsheet to effectively log my flight hours. I'm trying to make this spreadsheet calculate just about EVERYTHING for me. It's working out allright, but I'm stuck right now.

Here's the problem. Might be hard to visualize very well, but I'll try.

In coloumn B:4 through B:4999 I have the different makes and models of aircraft that I've flown. (300 CB, Robinson 44, etc...)
In coloumn H:4 through H:4999 I have the total time of each flight. (Using decimals, so an hour and a half is 1,5 hours)

So, now I want Excel to add up hours in the different types of makes and models of aircraft. Still following?

That means, in all of the coloumns between B:4 and B:4999 that have the make and model "300CB", I would want Excel to add up the appropriate times in coloumns H:4 to H:4999. That way ending up with a box telling me how many of my total flight hours I spent in the 300CB...

...Is that at all understandable...? Hm... Hopefully someone out there will know what the hell I'm talking about, and maybe give me an input. =)

Thanks for your time so far!