Any air force in the world, which desires to be self sufficient in aircraft maintenance, has to have its own repair/ overhaul agencies for servicing the fleet of aircraft, aero-engines, rotables and other associated equipment; a task which requires careful advance planning and investment.

In this book, an attempt has been made to pen down the genesis of assessing spares requirement for 1st, 2nd, 3rd and 4th line servicing of airframes and aero-engines with particular emphasis on forecasting optimum number of repair/ overhaul arisings of air frames / aero-engines and rotables and the optimum number of repair / overhauls that should actually be undertaken so as not to inflate the inventory of serviceable assets beyond authorized limits. The theories related to assessment of optimum quanta of spares for undertaking the repair / overhaul tasks as well as first and second line servicing as also the associated terminologies have been explained lucidly.

It is hoped that the book will be immensely helpful for all officers and airmen of the technical and logistics branches of the air forces of all the developing as well as underdeveloped countries for optimizing the inventory and utilizing the savings thus accrued for further modernization.