Monarch Aircraft Engineering Limited signs A350 line maintenance contract with China Airlines MRO Business Today 21:43 Monarch Aircraft Engineering Limited signs A350 line maintenance contract with China Airlines Monarch Aircraft Engineering Limited (MAEL), a leading Maintenance Repair & Overhaul (MRO) has signed a line maintenance agreement with China Airlines, the flag carrier and largest airline of the Republic of China Share this Share on FacebookTweet on TwitterPlus on Google+