Edited sentence: An alloy wing can withstand impact from heavy objects such as tools with minimal repercussions whereas carbon fibre would require a costly overhaul if a spanner was dropped on it.Carbon fibre is also susceptible to damage during the rigors of maintenance and servicing while in hostile territory.In many respects this aircraft is less durable and more maintenance intensive than its predecessor.New generation Aluminum Lithium alloys offer comparable weight savings at reduced cost with the added benefit of greater resistance to impact damage.Since carbon fiber is only semi-conductive, additional bonding and earthing provisions have to be installed to counteract the threat from lightening strikes, this adds weight.This A400M is expected to carry out the type of flying that the C130 performs, this includes rough strip landings.Weight saving offered by using carbon fiber is questionable when the prerequisite of additional bonding and earthing provisions are added.With use of carbon fiber materials, the wing and other components are vulnerable to damage caused by high velocity debris which manifest when rough strip landing takes place