Over 30 years ago, Interflug, the old east German flag carrier used to operate a schedule service between Khartoum and Addis. Departure times were always about 14.00 LT IIRC. What will stay with me for life is when they took off at +45oc + it was NOT a pretty sight. The things used to disappear, ON the horizon in a cloud of black smoke.
No pun intended but I did see on the history channel an Interflug a/c take off and disappear from the screen in its own smoke. Granted the pictures were in black and white.