This simple example illustrates a few reasons why functions are a brilliant idea, and have become fundamental building blocks in many programming languages: 1  Functions enable you to reuse parts of your program. 2  Functions make understanding the program easier because they give a name and a structure to a set of instructions.
How to keep your PPL(A) Current. Once you have obtained your JAA PPL it remains valid for five years provided that you keep your medical certificate and fly enough hours each year to keep your certificate of experience current. Your certificate of experience is part of your licence and is valid for two years.
1 If you bought PPI to cover a long term loan there is a chance that the insurance will run out before the loan is repaid. 2  Most PPI policies will only run for five years, so if your loan term is longer than this the seller should have explained this limitation. 3  If they didn't, you can claim. If it wasn't explained, you can claim. 2  If you were sold a 'single premium' policy-where the whole cost of the loan is paid for up front with money that is also borrowed at the same interest rate as the loan-you should at least be able to get a refund by cancelling the PPI.