The present document provides an overview of the content of the D1.1 of Work Package 1 “Aircraft concept generation and requirements for airport LAQN” within the EU funded project INDIGO: INtegration and Digital demonstration of low-emission aIrcraft technoloGies and airport Operations.As results of all tasks of WP1, and, in particular, Task 1.5 “DHEP-LARW aircraft concept generation”, a baseline (called INDI1) featuring INDIGO’s technologies, i.e., LARW (with strut) and DHEP (in particular, the PSH hybrid electric arrangement). Such IND1 configuration is described using the CPACS format.Likewise, the reference aircraft, the CPACS description of the Airbus A320 is also provided. A320 and IND1 share the same Maximum Take-off Weight, the same Maximum Payload, the same reference wing surface.For future references, this document also shares some information on the IND1 which is not directly described within the CPACS format: for such an innovative aircraft no official CPACS description is yet released.