System agnostic front end application for legacy systems

A method of accessing data in one of a first legacy computer system that has a first operating system and a second legacy computer system that has a second operating system that is different from the first operating system, the method comprising:

• providing a front end application that is in communication with each of the first legacy computer system and the second legacy computer system, wherein the front end application is displayed on a graphical user interface of a computer;
• receiving, via a first webpage displayed on the computer and using the front end application, a plurality of inputs that comprise:
• a generic command that is generic to the first operating system and the second operating system;
• and
• an aircraft identifier;
• determining, based on the aircraft identifier, whether data related to the aircraft identifier is associated with the first legacy computer system or the second legacy computer system;
• if the data related to the aircraft identifier is associated with the first legacy computer system, then transforming the generic command to a first operating system command;
• and
• if the data related to the aircraft identifier is associated with the second legacy computer system, then transforming the generic command to a second operating system command;
• wherein the first operating system command is different from the second operating system command, and thus the transformation of the generic command to either the first operating system command or the second operating system command reconciles differences in data schema associated with the first and the second legacy computer systems and allows for the front end application to be a single common front end application to access data within both the first and second legacy computer systems.