New Delhi, Dec. 31 -- All aircraft, whether civil or military, are required to be regularly overhauled at stated intervals based on flying hours. Such overhauls of IAF aircraft are carried out by designated BRDs (Base Repair Depots). Overhaul of Kiran (HJT-16) aircraft, operated mainly by AFFC (Air Force Flying College), are carried out by 5 BRD. The number of Kiran aircraft requiring overhaul during the year is estimated by HQ TC (HQ Training Command) and passed on to HQ MC (HQ Maintenance Command) which then tasks 5 BRD for the ensuing year. In this case, HQ MC had tasked 5 BRD for overhaul of 36 Kirans in 1981-82. A new Gp Capt (Group Captain) had recently been posted to 5 BRD and had taken over command on 28 July 1981. This new CO had a...