LAHORE - The PIA management has started inquiry into an extraordinary delay in the departure of Jeddah-Lahore flight Pk-7644, sources in the airline disclosed on Wednesday. The flight was delayed due to the blunder of the PIA staff stationed at Jeddha who issued about 12 duplicate boarding cards. The management earlier immediately grounded cabin crew staff of the flight concerned holding it responsible for the delay but on their protest the decision was taken back and crew staff was restored on duty and fresh inquiry initiated into the matter to fix responsibility. An official of the airline seeking anonymity said that the flight was delayed for more than 15 hours for the reason that PIA traffic staff of Jeddah Airport issued more than 12 duplicates boarding cards to the passengers at the time of departure due to unknown reasons. Sources said that cabin crew staff was grounded for the reason that they demanded extra compensation of Rs 10000 for over time. As per CAA rules they too were entitled to extra allowance for the overtime. A spokesman of the cabin crew staff said that their peers were not responsible for the delay as pilot of the plane and cockpit crew had already left the plane after their duty timing. He was of the view that if management wanted to take action against cabin crew then it should first take action against pilot and cockpit crew who left the plane earlier. He said that after the step of grounding cabin crew staff, "we registered our protest with administration and Jahangir Pathan and Director Flight Operation Capt Shujah who reviewed the decision and our staff is restored on duty." The PIA top officials have constituted an inquiry committee to further probe into the issue. The members of the committee are: an official of legal section, deputy general manager, human resource and manager security PIA. When contacted the spokesperson of the PIA, he said that there was no issue of duplicity in boarding cards but it was an issue of the over time of the cabin crew which was settled after negotiation with MD PIA a couple of days back.