GM1 ARO.OPS.110 Lease agreements for aeroplanes and helicopters
CAA ORS9 Decision No. 1
(a) Except for wet lease-out, approval for an UK operator to lease an aircraft of another operator should be issued by the aviation authority of the lessee and the aviation authority of the lessor.
(b) When a UK operator leases an aircraft of an undertaking or person other than an operator, the aviation authority of the lessee should issue the approval.