Eligible project extension under income tax permits amended project cost approval and three-year continuation of hospital expansion. Notification under section 35AC extends eligibility of the Chavara Cancer Hospital expansion project by Kuriakose Elias Trust for three years commencing 2012-13 and, on the National Committee's recommendation of proper execution, amends the original notification to substitute the previously stated maximum project cost with the newly approved higher amount for computing deductions under the provision.