Complex sentence: Conversion from CATIA Version 4 to Version 5 created construction problems for the Airbus A380 which caused $6.1B in additional costs due to years of project delays when aircraft wiring was too short to make connections.
Split into simpler sentences: Conversion from CATIA Version 4 to Version 5 created construction problems for the Airbus A380 aircraft. These problems resulted in $6.1B of additional costs due to years of project delays when aircraft wiring was too short to make connections.