Something with PIA and landing gears. Boeing 720 was a base training mishap ~1975 (no injuries/Aircraft returned to service). whilst in the 747-200 accident in1986 c
rew forgot to lower landing gear before landing. The aircraft made belly landing. Passengers and crew were evacuated through emergency escape slides. Some of the passengers received minor injuries during the evacuation process. Two engines of the aircraft were damaged beyond repair due to belly landing. The Boeing 747 returned to service after repair work.