(a) In this section -
"agricultural machinery" means machinery or plant used or intended to be used for the purposes of a trade of farming (within the meaning of Chapter II of Part I of the Finance Act, 1974) or machinery or plant of a type which is commonly used for such a trade and is used or intended to be used for the purposes of a trade which consists of supplying services which normally play a part in agricultural production;
"asset" means machinery or plant;
"chargeable period", "chargeable period related to", and "chargeable period or its basis period" have the meaning assigned to them by paragraph 1(2) of the First Schedule to the Corporation Tax Act, 1976;
"fair value", in relation to a leased asset, means an amount equal to such consideration as might be expected to be paid for the asset at the inception of the lease on a sale negotiated on an arm's length basis less any grants receivable by the lessor towards the purchase of the asset;
"inception of the lease" mean