All Nippon Airways Flight 533, registration JA8658, was a

NAMC YS-11 The NAMC YS-11 is a turboprop airliner designed and built by the Nihon Aircraft Manufacturing Corporation (NAMC), a Japanese consortium. It was the only post-war airliner to be wholly designed and manufactured in Japan until the development of t ...

en route from

Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of ...

, Japan, to

Matsuyama 270px, Matsuyama City Hall 270px, Ehime Prefectural Capital Building is the capital city of Ehime Prefecture on the island of Shikoku in Japan and also Shikoku's largest city. , the city had an estimated population of 505,948 in 243541 househo ...

on the island of

Shikoku is the smallest of the four main islands of Japan. It is long and between wide. It has a population of 3.8 million (, 3.1%). It is south of Honshu and northeast of Kyushu. Shikoku's ancient names include ''Iyo-no-futana-shima'' (), '' ...

. It was the fifth crash in Japan in 1966 and the second one experienced by All Nippon Airways that year, the first being the loss of Flight 60 on February 4. It was also, at the time, the deadliest crash of an NAMC YS-11, and remains the second-deadliest after Toa Domestic Airlines Flight 63, which crashed in 1971 with 68 deaths. The plane left Osaka International Airport in Itami at 19:13. At approximately 20:20 it arrived at

Matsuyama Airport is an airport located west southwestAIS Japan
of go-around In aviation, a go-around is an aborted landing of an aircraft that is on final approach or has already touched down. A go-around can either be initiated by the pilot flying or requested by air traffic control for various reasons, such as an unst ...

. The plane reached a height of 70–100 metres, turned left, lost altitude, and crashed into the Seto Inland Sea at approximately 20:30. The reason for the loss of altitude that caused the crash was never determined.

References

* {{Aviation accidents and incidents in Japan Aviation accidents and incidents in 1966 Aviation accidents and incidents in Japan 1966 in Japan Airliner accidents and incidents with an unknown cause Accidents and incidents involving the NAMC YS-11 All Nippon Airways accidents and incidents November 1966 events in Asia