Date: April 06, 1993
Time: 01:10
Location: 950 nm S of Shemya, Alaska
Operator: China Eastern Airlines
Flight #: 583
Route: Shanghai - Los Angeles
AC Type: McDonnell Douglas MD-11
Registration: B-2171
cn / ln: 48495/461
Aboard: 264   (passengers:248  crew:16)
Fatalities: 2   (passengers:2  crew:0)
Ground: 0
Summary: The slats were inadvertently deployed while at FL 330. The aircraft progressed through several pitch oscillations and lost 5,000 feet in altitude. Inadequate design of the flap/slat actuation handle that allowed the handle to be easily and inadvertently dislodged from the UP/RET position, thereby causing extension of the leading edge slats during cruise flight.

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