Page:Report of the Board of Inquiry into the Helderberg air disaster.djvu/92

Rh 700°C will break if a tensile load of between 56 and 100 lbs is applied to it. The minimum breaking strength of a sound cable is 2000 lbs.

(10) Microscopic examination of a black bag revealed the presence of tiny rust spots and a round black particle which was similar to those found in the electrical conductor mentioned above.

1.16.6 The aeroplane manufacturer advised that a slack elevator control cable would not allow overcontrol inputs. A completely slack cable would result in a neutral elevator which would be mechanically driven to neutral by a spring loaded roller and cam arrangement. The cable tension regulator can take up 5,05 inches of cable slack.

1.16.7 The manufacturer of the aeroplane analysed the structural capability of the cargo compartment crown section where the most heat damage was observed i.e. between body stations 1640 and 1960. The material allowables used are the properties at room