LAHORE PIAs 11 planes of total 39 were grounded at Karachi Airport for repair work causing flight cancellation and delays in flight operation, sources confided to TheNation on Wednesday. Flights cancelled and delayed due to unavailability of planes included PK- 267 operating on Dhaka Karachi Kathmandu sector. PK-789 Karachi-Lahore-Toronto was delayed more than 26 hours, PK-793 Karachi-Barcelona-Chicago was delayed by five hours. PK 451 and PK-452 Islamabad-Skardu-Islamabad was cancelled due to unavailability of aircraft. Some other local flights were delayed owing to shortage of ATR aircraft which included PK-588 operating on Karachi-Bahawalpur-Lahore sector. PK-155 oil company chartered flight Karachi-Kandanwari was delayed by three hours. PK 605,606,607 and 608 operating on Islamabad, Gilgit-Islamabad were cancelled due to unavailability of aircrafts. Similarly, 660 and 661 operating on Islamabad-Chitral-Peshawar were cancelled. Sources claimed that among the planes grounded included three B-777 two at Karachi airport, one due to bird-hit while other owing to technical fault. A PIA officer said that Engineering Department has sent requisition for the spare parts for the plane and it would be available from Dubai or London. Third B-777 plane was grounded at Kathmandu Airport due to technical reasons. Two ATR aircrafts had been grounded at Karachi for the last three months both have problems in their engines. Two planes B-737 were grounded for the last three to four months for the lack of four engines. One aircraft 747 is without four engines for the last three months, whereas three A-310 planes were short of five engines while their one engine was on routine check or inspection. Due to flights cancellations and delays not only a national flag carrier was bearing more losses but passengers were also facing lot of problems on different airports of the country. Sources said PIA management infact was not interested to solve issue of shortage of planes. It is very much evident with the deal struck by PIA management with Greece govt in the recent past under which two planes were acquired on lease basis. A PIA senior officer said management can overcome the planes shortage by repairing the grounded aircrafts rather than getting the planes on lease.