Time Calculator 4 Aviators

PilotsCalc is a Time Calculator for Aviators.

First time push to Clear button, clears input hours and minutes,
second time push to clear button, clears solution windows.

Back arrow allow user to do correction to input digits.

Note: Calculations limited up to 1.000.000:00 hours due to screen design limit. When Calculation reach to one billion hours calculations clears automatically due to screen design,