ISLAMABAD - Pakistan International Airlines (PIA) has unveiled plans to induct more than two dozens modern aircraft in its fleet for different international as well as domestic destinations, official sources told TheNation on Tuesday. PIA is in talks with different private airlines for getting aircraft for various destinations, a senior official of Ministry of Defence said. The PIA plan, envisaging induction of nearly 27 aircraft in its fleet by 2014-2015, would be carried out in phases. Sources said that 55 per cent domestic flights were delayed for lack of adequate number of aeroplanes during the last 70 days as the national carrier have only four functional planes out of six while the total number of planes should be seven as per set standards. The sources said that PIA planes have to travel over six sectors and in case a plane is delayed for five minutes at one station it would ended up with a delay of half an hour while landing at a airport in Lahore. From Lahore to Islamabad 63 per cent flights were delayed in May, 48 per cent in June while 55 per cent flights lagged behind the scheduled timing in first week of July. Similarly, from Islamabad to Lahore 70 per cent flights were delayed in May, 53 per cent in June while 65 per cent flights could not reach their destination on the stipulated timing. They were of the view that the problem of delay in flights had compounded after the private airlines failed to fulfil their commitment to introducing flights on non-profitable destinations.