For many years, I have used this product to plan my month and document my flight time as a pilot. There are many products out there for this purpose, but by amending the column headings in the expense section, I am able to keep track of my flight time while using the full-month format in the front to know my schedule, count my days on, etc. Computer programs are fine, and I use one, but pilots can't always fire up a computer when we get a call. We write it down and enter it later, so it's great for the professional pilot. If the columnar headings in the expense portion represented pertinent flight hours -or better yet, were an additional section, a world time zone map and area and country code guide would complete the package. Still using as-is, I'd be lost without it. Pilot use is not as small of a market as one may think. If you are interested I would be happy to provide details of my suggestions. Tony Complo complo[@] [@]