Originally a 2-2-2WT, side tanks were added 1886, and around this time it received the number 66.

In 1892 Aerolite was rebuilt into a 4-2-2T, destroying much of the original engine.

Aerolite was withdrawn in 1933 and preserved in 1934 at the LNER's York museum.

Aerolite is the basis for the Thomas & Friends character named Whiff[broken anchor], an industrial rubbish engine whose job is to shunt rubbish to the Sodor rubbish dump, which was renamed to the Sodor Recycling Plant.

This article relating to steam locomotives operated in England is a stub.