Patent Number: 
Section: claims

1. Computer apparatus for the management of data relating to the maintenance and performance of an asset, comprising means for generating a graphical user interface on a display screen, the graphical user interface consisting of a data packet containing at least one data input section, said data input section having at least one data field, wherein each section contains a text field which is capable of receiving, reading and uniquely identifying hand written text, and wherein the computer apparatus further includes means for interrogating the at least one data input field and the text field such that the computer apparatus will recognise the section as complete once all of the at least one data fields have been completed and the text field has been completed with the correct, uniquely identifiable handwritten text. 2. Computer apparatus as claimed in claim 1, wherein the computer apparatus further includes means for checking that all of the at least one data input sections in the data packet have been completed. 3. Computer apparatus as claimed in claim 1, wherein the computer apparatus comprises means to receive additional data from a remote source corresponding to an additional maintenance task, and to create at least one additional data entry corresponding to the task. 4. Computer apparatus as claimed in claim 1, wherein the hand written text is the signature of the user. 5. Computer apparatus as claimed in claim 1, wherein the asset is an aircraft. 6. Computer apparatus as claimed in claim 1, wherein each data input section contains a plurality of fields capable of receiving data related to the performance and maintenance of the aircraft. 7. Computer apparatus as claimed in claim 6, wherein the data related to the performance and maintenance of the aircraft includes data relating to at least one of the following categories: sectors flown, data relating to re-fuelling, oil and hydraulic fluid, anti-ice and de-icing, scheduled maintenance, information on recorded defects, notes on maintenance to/from the crew, serious incidents, any other maintenance and operational information, including specifically defined tasks.