The Admiralty predicted that all "Majestic"-class carriers would require upgrades to their aircraft lifts and arrester gear in the early 1950s, to operate the faster and heavier carrier aircraft under development. Originally, the RAN wanted to upgrade "Sydney" to the same or similar standard as sister ship , after the second carrier was delivered. The installation of an angled flight deck and mirror landing aid, would have allowed "Sydney" to operate modern jet aircraft. However, financial and manpower restrictions led to the cancellation of this program.