Frontispiece
"Per Ardua ad Astra" A MICROPHONE accidentally dropped in a cockpit, a jammed control column and 11 persons are plunged into the waters of San Francisco Bay to drown within sight of their destination. Ice, accumulating on aileron leading edges in quantities never before experienced, throws a loaded transport out of control, wrecks it on a Pennsylvania hillside. Thirteen people die. A $90,000 machine is reduced to junk.