Pakistan International Airlines Flight 705
Pakistan International Airlines Flight 705 (PK705) was a Boeing 720 airliner that crashed while descending to land at Cairo International Airport on 20 May 1965. Of the 121 passengers and crew on board, all but 6 were killed. The accident, the fourth and worst involving a Boeing 720, was the deadliest to occur in Egypt at the time and remains the third-deadliest, behind Flash Airlines Flight 604 and Metrojet Flight 9268. Accident. Flight 705 on 20 May 1965 was an inaugural flight between Karachi, Pakistan and London, United Kingdom and was carrying distinguished guests  and journalists among the 114 passengers. The aircraft was scheduled to stop at Dharan in Saudi Arabia, Cairo and then Geneva before completing its journey to London. As the aircraft was on final approach to Cairo International Airport, the pilot reported problems with the flaps; shortly thereafter, the aircraft crashed southeast of the airport and broke up as it exploded into flames. Six of the passengers were thrown clear of the wreckage, but everyone else on board was killed. Among the dead was the Chinese aircraft designer Huang Zhiqian, who was chief designer of the fighter jet Shenyang J-8. Aircraft . The aircraft was a Boeing 720-040B with the registration "AP-AMH" and manufacturer's serial number 18379; it was first flown on 19 October 1962 and delivered to Pakistan International Airlines on 7 November 1962. At the time of the accident the aircraft had flown 8378 hours. Investigation. On 26 May, local police reported that a transistor radio had been found in the wreckage of the aircraft with jewellery valued at $120,000 hidden in it. The probable cause of the crash was that "the aircraft did not maintain the adequate height for the circuit and continued to descend  until it contacted the ground. The reason for that abnormal continuation of descent is unknown."