Service 390 was withdrawn in 1993. It is a full-air-con service.
It's route: Changi Airport PTB Coach Park - Tomlison Rd
[loop]
Changi Airport PTB 1 and 2, Airport Blvd, ECP, Temasek Blvd,
Raffles Blvd, Raffles Ave, Stamford Rd, Orchard Rd, Penang Rd,
Somerest Rd, Orchard Link, Orchard Blvd, Tomlinson Rd, Tanglin Rd,
Orchard Rd, Bras Basah Rd, Raffles Blvd, Republic Blvd, ECP,
Airport Blvd and Changi Airport PTB 1 and 2.
Current service 36 is former service 16E, with a change in route to
become mostly similar to former service 390.