Incident Overview

Date: Sunday 14 December 1969
Aircraft Type: NAMC YS-11A-213
Owner/operator: All Nippon Airways – ANA
Registration Number: JA8743
Location: Awaji island, Hyogo prefecture – ÿ Japan
Phase of Flight: En route
Status: Minor, repaired
Casualties: Fatalities: 0 / Occupants: 45
Component Affected: Outer two meters of the left wing of the YS-11, lower fuselage skin, propeller blades, right engine, and rudder of the C50 Twin Bonanza.Outer two meters of the left wing of the YS-11, lower fuselage skin, propeller blades, right engine, and rudder of the C50 Twin Bonanza.
Category: Accident
A NAMC YS-11, a Beechcraft C50 Twin Bonanza, collided with a YS-11 mid-air after a right engine replacement near Osaka-Itami. Both aircraft experienced damage due to a collision.A NAMC YS-11, a Beechcraft C50 Twin Bonanza, collided with a YS-11 mid-air after a right engine replacement near Osaka-Itami. Both aircraft experienced damage due to a collision.

Description

ANA flight 547, a NAMC YS-11, took off from Osaka-Itami at 11:13 local time on a flight to Matsuyama and leveled off in VFR at 3150 m altitude. A Beechcraft C50 Twin Bonanza, JA5022, with one pilot on board also took off from Itami at ca. 11:00 for a test flight after a right engine replacement. Both aircraft collided in mid-air. The YS-11 lost the outer two meters of the left wing, and the C50 suffered damages on the lower fuselage skin, propeller blades of both engines, right engine and rudder. There were no personal injuries. The weather was clear and visibility was 30 km. The YS-11 landed safely after colliding with Beechcraft C-50 Twin Bonanza JA5022 (owned by Yomiuri Press), which was conducting a VFR test flight. Both aircraft landed at Osaka.

Source of Information

https://ja.wikipedia.org/wiki/%E5%85%A8%E6%97%A5%E7%A9%BA%E6%A9%9F%E6%B7%A1%E8%B7%AF%E5%B3%B6%E7%A9%BA%E4%B8%AD%E6%8E%A5%E8%A7%A6%E4%BA%8B%E6%95%85https://ja.wikipedia.org/wiki/%E5%85%A8%E6%97%A5%E7%A9%BA%E6%A9%9F%E6%B7%A1%E8%B7%AF%E5%B3%B6%E7%A9%BA%E4%B8%AD%E6%8E%A5%E8%A7%A6%E4%BA%8B%E6%95%85

Primary Cause

Right engine replacement and subsequent collision.Right engine replacement and subsequent collision.

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