There are currently six books in the 1000 QA&E range, covering the following subjects.
Principles Of Flight.
Aircraft Performance.
Mass & Balance.
Aircraft General Knowledge.
Instruments.
General Navigation.
A seventh book covering Radio Navigation will be available within a month or so.
For candidates who have problems with the numerical questions, there is also an interactive CD entitled "Mastering Mathematics For DGCA Examinations" available from Sterling Book House. This provides an unlimited number of questions, together with explanations and step-by-step solutions. This enables users to keep on practicing each type of calculation until they become really proficient.