Lightweight tertiary thrust reverser lock assembly with a blocking member

An airplane thrust reverser system for use in a jet engine comprising:

• a transcowl moveable between a deployed position in which at least a portion of gas flowing through said jet engine is redirected in a non-rearward direction and a stowed position in which gas flowing through said jet engine is not redirected;
• a thrust reverser lock, said thrust reverser lock comprising:
• a pivot;
• a locking element rotatable about said pivot between a first position for preventing deployment of a thrust reversing member and a second position for allowing deployment of said thrust reversing member;
• a resilient member for urging said locking element toward said second position, said locking element having a first surface comprising a cam adapted to engage a locking pin on said thrust reversing member for rotating said locking element from said second position to said first position when said thrust reversing member moves from a deployed position to a stowed position;
• a blocking member moveable between a blocking position and a retracted position, wherein said blocking position prevents rotation of said locking element from said first position to said second position;
• means for selectively moving said blocking member away from said blocking position;
• said locking element further including a second surface adapted to engage said locking pin when said thrust reversing member moves from said stowed position toward said deployed position and when said blocking member prevents said locking element from being urged from said first position to said second position, said second surface being inclined such that engagement of said second surface with said locking member prevents said thrust reversing member from being deployed while producing no force at said blocking member.