Fault recoverability (FR) property reflects the capability of the system to accommodate faults through control reconfiguration under admissible input energy constraints. This study analyses the FR of interconnected non-linear and linear systems. Several explicit bounds of the amount of control energy required to drive the initial states of the interconnected system to the origin are computed. This helps to evaluate the FR under both centralised and distributed control schemes. The new results are further applied to meta aircraft configuration to verify the effectiveness.