Incident Overview
Date: Monday 30 December 1963
Aircraft Type: Douglas DC-8-32
Owner/operator: Japan Airlines
Registration Number: JA8002
Location: 100 km NE of Kadena Air Base, Okinawa –
ÿ Japan
Phase of Flight: En route
Status: Substantial
Casualties: Fatalities: 0 / Occupants: 6
Component Affected: Rudder boosterRudder booster
Category: Accident
A training flight near Okinawa resulted in a right-hand spin of the Convair CV-880 aircraft due to a rudder booster failure and idling engine power. The pilot initiated a nose-down maneuver and applied power to engines 1 and 2, leading to the spin. The aircraft recovered at a low altitude, with both outboard engines severely damaged, and landed at Naha Airport, Okinawa.A training flight near Okinawa resulted in a right-hand spin of the Convair CV-880 aircraft due to a rudder booster failure and idling engine power. The pilot initiated a nose-down maneuver and applied power to engines 1 and 2, leading to the spin. The aircraft recovered at a low altitude, with both outboard engines severely damaged, and landed at Naha Airport, Okinawa.
Description
During a training flight near Okinawa hydraulic failure of the rudder booster was being simulated when speed fell to 120 knots. The pilot apparently put the nose down and applied power to engines 1 and 2, which were idling, but failed to re-trim the rudder. The aircraft entered a right-hand spin at 12,500 feet, made four or five revolutions and was recovered at 7,500 feet . Both outboard engines were torn off. A safe landing was made at Naha Airport, Okinawa and there were no injuries to the crew. The accident occurred during the transition training to DC-8, which was being conducted for the two captains of Convair CV-880.
Source of Information
https://www.eonet.ne.jp/~phantom/civil_aviation/cadb/disaster/accident/19631230ja.htm, https://ja.wikipedia.org/wiki/%E6%97%A5%E6%9C%AC%E8%88%AA%E7%A9%BA%E3%81%AE%E8%88%AA%E7%A9%BA%E4%BA%8B%E6%95%85%E3%81%8A%E3%82%88%E3%81%B3%E3%82%A4%E3%83%B3%E3%82%B7%E3%83%87%E3%83%B3%E3%83%88#CITEREF%E6%9F%B3%E7%94%B01986ahttps://www.eonet.ne.jp/~phantom/civil_aviation/cadb/disaster/accident/19631230ja.htm, https://ja.wikipedia.org/wiki/%E6%97%A5%E6%9C%AC%E8%88%AA%E7%A9%BA%E3%81%AE%E8%88%AA%E7%A9%BA%E4%BA%8B%E6%95%85%E3%81%8A%E3%82%88%E3%81%B3%E3%82%A4%E3%83%B3%E3%82%B7%E3%83%87%E3%83%B3%E3%83%88#CITEREF%E6%9F%B3%E7%94%B01986aPrimary Cause
Rudder booster failure and improper rudder trimming during a simulated training flight.Rudder booster failure and improper rudder trimming during a simulated training flight.Share on:
