Boeing 747-100/200/300
The 747 Classic Series was Boeing's first jumbo-jet. The 747 Classic uses a Mark III Antiskid System

Mark III Antiskid System 00-429-2
 

Antiskid Control Unit
42-189-7
Antiskid Control Valve, Normal
39-525-1
Antiskid Control Valve, Alternate
39-525-3
Wheelspeed Transducer
40-805
(200 T)

Autobrake System
Autobrake Control Unit
42-319-3

Boeing 747-400
The 747-400 Series was Boeing's first major upgrade to the 747 jumbo-jet, and included the extended upper deck of the -300 model. The antiskid system was upgraded to Mark IV technology with digital autobrakes and Torque Limiting.

Mark IV Antiskid / Autobrake System
Antiskid / Autobrake Control Unit
42-747-2
Module, Antiskid Control Valve, Normal
33-065-2
Module, Antiskid Control Valve, Alternate
33-067-2
Wheelspeed Transducer
140-025-2