I didn't said 1000 hours a year. That's not possible. Usually NATO does 150-180 hours in a year, Russians do 120-130 hours a year, our Bisons do 100 hours a year, MKIs upwards of 200 hours a year.
Hours are important, as it involves important agreements regarding spares and support contracts with the OEM. You cannot fly more than the given number of hours left , without giving up support of the OEM.
If I say that your 13 ADF and 31 original AM/BM have little over 1000 hours left in their engines, it means that for operations extending upto 15-20 years since completion of MLU , it's not possible that they fly more than 60-70 hours a year.
On the RD93. It's derived from the RD33 series 3 engines actually. Unlike claimed to be derived from RD33MK which has Full Digital Authority Controls. And the claimed life of RD33 series 3 is 2000 hours according to OEM. But in actual service they do not last longer than 600-700 hours.
You may even ask your biradars in Malaysia who gave up Mig29 operations.
Some wrong info there.
RD-93 was derived from the basic RD-33, the same smoky engines that nobody likes. The life of the RD-93 is 2200 hours. It requires an overhaul after 800 hours.
The RD-33 Series 3 and RD-33MK had their service lives increased to 4000 hours with overhauls at 1000-hour intervals. Significantly less smoke.
So when you say it doesn't last 600-700 hours, it's correct, but you are talking about the overhaul interval, not service life.