The analogue flight information display board at Changi Airport Terminal 2 originally put up in 1999 is no more.

The board, which was retired earlier in February, has been taken down and donated to the National Heritage Board (NHB) to become part of Singapore's National Collection.

Located between check-in rows 9 and 10 of the airport’s Departure Hall, the board became one of the remaining vestiges of the 30-year-old terminal, which has been undergoing upgrading and expansion works.

The flip board had been undergoing de-installation in various stages in February.

The other board will follow suit.

The analogue flip boards were decommissioned due to increasing difficulties faced in sourcing for parts and challenges in maintenance, Changi Airport Group said.

They are also known as Solari boards, after the Italian company that first manufactured them.

The different components of the board were transported to its storage facility for cleaning after they were documented by NHB.

Each flip board consists of one large display board, 48 panels which form the back board, more than 50 metal casings, and 2,052 capsules of individual alphabets and numbers.

The thorough cleaning of components is estimated to take six months.

The components will be transferred to NHB’s Heritage Conservation Centre (HCC) to be accessioned as part of the National Collection.

Conservators at HCC will assess the condition of the components of the flip board.

They will then recommend the necessary plans for conservation and storage.

CAG and NHB will then explore future possibilities for display.

The donation was announced by NHB and CAG in a March 1 joint media release.

Alvin Tan, NHB's deputy chief executive of policy and community said the board was accessioned into the National Collection because it is an "important piece of airport infrastructure and a formative feature of the air travel experience".

“We are heartened that the flip boards have provided many wonderful memories to Changi Airport’s passengers and visitors over the decades, as they continue to capture the romance of travel in today’s highly digital age," Ang Siew Min, CAG's senior vice president of development operations said.

"The flip boards are certainly part of Changi Airport’s history. Hence, we will also re-use the last remaining flip board, to be retired in about two years’ time, in a different part of the airport as a display piece to be enjoyed by all who visit.”