In FANET, LODMAC protocol is used which have many advantages over another protocol. Flying Ad Hoc Networks called as FANETs lies among the most arising technologies of space wireless networks for both military and civilian. The main objective of our work is designing and implementing of LODMAC protocol for FANETs when node failures are presented in network. Thus existing techniques has neglected the effect of node failures in FANETs. So in concern to handle this issue a new technique has proposed which has utilised detection and replacement of node failure in FANETs to enhance the results further. The overall results indicates that the proposed technique outperforms over the other techniques.