Second prototype. First flew as G-SSHH in 1982. Used by a number of operators. Reregistered as G-OPSA then N5828B in 1984, G-SSHH in 1985, N801RW in 1986 and G-BPNP in 1987. Converted to a Bae146-100STA and reregistered as G-BSTA in 1988 and OE-BRL in 1990. Converted to a Bae.146-100QC and reregistered as G-BSTA then ZS-NCA in 1991, G-BSTA in 1995 and VH-NJV in 1995. Scrapped at Adelaide in 2019.

This was the demonstrator for a military transport version of the 146. STA = Sideloading Tactical Airlifter. No orders were received.

A proposed military Sideloading Tactical Airlifter (STA) version of the civil BAe 146QT.

The BAe 146STA (Sideloading Tactical Airlifter) was intended as a military transport based on the 146QT cargo aircraft, with the same left rear cargo door. This demonstrator, fitted with a dummy refuelling probe and an air-openable paratroop door, was the second 146 to be built (G-SSHH). Despite extensive demonstration tours but there were no orders. The aircraft eventually went to National Jet in Australia as VH-NJV