7. DC-4 (Canadian Pacific Air Lines), July 21, 1951
C-54A-DO similar to the the C-54A-10-DC that disappeared. (Wikimedia Commons)
Plane type: Douglas C-54A-10-DC (CF-CPC)
The C-54 was en-route to Anchorage-Elmendorf AFB, AK, USA, from Vancouver International Airport, BC, Canada.
A report was made at 6:53 p.m. PT while the plane was flying over the Cape Spencer intersection in British Columbia. Nothing more was heard after.
The United States Air Force and Royal Canadian Air Force conducted an extensive search, but failed to find any traces of the plane.
8. DC-3 (Gulf Aviation), July 10, 1960
Douglas C-47-DL similar to the one that disappeared. (Wikimedia Commons)
Plane type: Douglas C-47-DL (VT-DGS)
The DC-3 departed from Doha Airport, Qatar, for Sharjah Airport, United Arab Emirates.
Last radio contact was made to Sharjah air traffic control at 6:05 a.m. GMT, but Sharjah never heard the transmission.
The pilot of a de Havilland Heron plane, who was also scheduled to land at Sharjah, heard the DC-3′s transmission to the airport’s traffic controllers.
The de Havilland Heron plane landed at Sharjah. The DC-3, however, disappeared.
Poor visibility and considerable tailwind were suggested as plausible reasons for the accident.
9. Merpati Nusantara Airlines Flight 6715, January 10, 1995
de Havilland Canada DHC-6 Twin Otter 300 similar to the one that disappeared. (Wikimedia Commons)
Plane type: de Havilland Canada DHC-6 Twin Otter 300 (PK-NUK)
The Twin Otter plane departed from Bima Airport for Ruteng Airport in Indonesia.
The plane went missing in bad weather.
No wreckage was ever found.