Runway Departure at Karachi International Airport Involving Flight PA073 (N738PA)

Incident Overview and Approach Details Flight PA073 was cleared to land on runway 25R at Karachi International Airport (KHI), Pakistan. The approach speed just before touchdown was 152 knots. After touchdown, reverse thrust was applied on engines 1, 2, and 3. Engine 4, which had an unserviceable reverser, was left in forward idle. ## Runway Departure and Damage Seventy knots was called, and about three seconds later, reverse power was decreased. At this stage, the EPR on engine 4 increased rapidly. The aircraft veered to the left of the centerline at about 7,400 feet from the approach end of runway 25R and departed the runway edge at 8,000 feet from the approach end, with 2,500 feet of runway remaining. Shortly before departure, the pilot flying (copilot) reported no brakes and no nose wheel steering. The captain stated that he applied the brakes and tiller to assist. After leaving the runway surface, the aircraft traveled 380 feet through soft mud before coming to rest about 2,100 feet from the end of runway 25R, heading about 160 degrees on the southern side of the runway, with the tail 120 feet from the runway edge. Shortly after departure, the nose gear struck a VASI light installation and its concrete base, causing the nose gear to collapse backwards and to the left. This resulted in total destruction of the VASI light installation and damage to the forward cargo hold, the floor of the first class section, and the stairway leading to the upper deck. The aircraft damage was substantial and it was not repaired. All 243 occupants evacuated safely.