23.1 No later than [ ] months prior to the [first Phase] Completion Date Sub-hubco shall submit to the Authority's Representative in accordance with Schedule Part 8 (Review Procedure) a Schedule of Programmed Maintenance for the period from the [first Phase] Completion Date to the expiry of that Contract Year.
23.2 Not later than [ ] months prior to the commencement of each subsequent anniversary of the [first Phase] Completion Date Sub-hubco shall submit to the Authority's Representative in accordance with Schedule Part 8 (Review Procedure) a Schedule of Programmed Maintenance for the next succeeding Contract Year [in respect of all Phases completed prior to, and all Phases scheduled to be completed in, that Contract Year].
23.3 Each Schedule of Programmed Maintenance shall contain the following information (the "Programmed Maintenance Information"):
23.3.1 details of the proposed start and end dates for each period of Programmed Maintenance, the works to be carried out and the proposed hours of work; and
23.3.2 details of any effect of the Programmed Maintenance on the delivery of any of the Services and/or the activities of the Authority.
23.4 Not later than [ ] Business Days prior to the commencement of any quarter (being a three month period commencing on 1 April, 1 July, 1 October or 1 January), Sub-hubco may submit to the Authority's Representative for approval in accordance with Schedule Part 8 (Review Procedure) a revision to the Schedule of Programmed Maintenance for the Contract Year in which the relevant quarter falls showing the effect of the proposed changes to the Programmed Maintenance Information. If the Authority's Representative does not raise comments on such proposed revision in accordance with Schedule Part 8 (Review Procedure), the Schedule of Programmed Maintenance as revised shall become the Schedule of Programmed Maintenance in respect of that quarter.
23.5 Where the Authority's Representative raises comments in respect of any Programmed Maintenance periods and/or hours of work shown in a Schedule of Programmed Maintenance in accordance with paragraph 3 of Schedule Part 8 (Review Procedure), he shall indicate whether, and if so when, the Programmed Maintenance can be re-scheduled and Sub-hubco shall amend the relevant Schedule of Programmed Maintenance accordingly.