although it did have to spend most of its time at duckford sitting to one side watching as the engineers stripped and re-skinned the fabric covering of the aircraft , renew the seals in the undercarriage shock absorbers , replace the control cables , plus tidy up few other bits and pieces , although despite wanting to keep the aircraft as close to original as possible i sanctioned a new electrics system , along with a modern day aircraft battery , and allowed them to gut the radio .