A fail-safe lug is carried by an engine frame member and receives a clevis
carried by an engine mount member. The mount member includes side links
that transmit transverse loads between the engines and the airframe and a
thrust link that transmits axial, engine thrust loads between the engine
and the airframe. A fail-safe pin is carried by the clevis and has an
outer diameter that is smaller than an aperture in the lug and through
which the pin passes, so that no loads are imposed on the fail-safe pin in
normal operation. When one or more of the links are no longer capable of
transmitting loads, the fail-safe arrangement becomes operative to
accommodate the loads transmitted between the engine and the airframe.
