Incident Overview
Date: Monday 20 July 1981
Aircraft Type: Fokker F-27 Friendship 600RF
Owner/operator: Somali Airlines
Registration Number: 6O-SAY
Location: near Balad –
ÿ Somalia
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 50 / Occupants: 50
Component Affected: The right wingThe right wing
Category: Accident
An F-27 aircraft experienced a severe turbulence event during takeoff, resulting in a spiral dive and exceeding design stress limits. The increased loads led to wing separation.An F-27 aircraft experienced a severe turbulence event during takeoff, resulting in a spiral dive and exceeding design stress limits. The increased loads led to wing separation.
Description
The F-27 entered an area of heavy rain in clouds with severe turbulence, eight minutes after takeoff. The aircraft entered a spiral dive after encountering strong vertical gusts. Loads during the dive increased to 5.76 G. These loads exceeded the design stress limits, causing part of the right wing to separate.
Primary Cause
Strong vertical gusts encountered during takeoff caused excessive loads on the aircraft, exceeding design stress limits.Strong vertical gusts encountered during takeoff caused excessive loads on the aircraft, exceeding design stress limits.Share on:
