My online status have changed to this 4 days after my IT -->
"We are unable to accept your application within a 12 month period of your previous application. If you wish to re-apply for the Cadet Pilot Programme, please do so at the appropriate time."
Does this mean I had failed the IT? Please give me some directions.
No, it means you actually passed. In fact it means you did so well that you are automatically accepted into the programme, bypassing all the other stages of assessments. Soon, you will receive an email detailing the start date of your course, along with other relevant information. Very few get this result, so CONGRATULATIONS