Explain how each of these matters should be accounted for in accordance with the requirements of IAS 16.

(a) A company buys an aircraft for 9,000,000. Under civil aviation rules, the aircraft requires a major inspection every three years at a cost of 200,000. Three years after the purchase of the aircraft it undergoes its first major inspection. The costs in relation to the inspection amounted to 220,000. (b) On 1 June 2009, a company spent 100,000 to replace the wall lining of one of its two furnaces. The furnace had been acquired six years previously and had a carrying value, at 1 June 2009, amounting to 420,000. Of this amount, 20,000 related to the original wall lining.