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Circuit Module

Technical Information

Catalogue No: C0850
Category: Flight Control
Object Type: Module/Sub-Assembly/Component
Object Name: Circuit Module
Part No: SA-245-EA3
Serial No: 074/65
Manufacturer: Unknown
Division: Unknown
Platform(s): BAC 1-11
Year of Manufacture: 1965
Dimensions: Width (mm): 76
Height (mm): 118
Depth (mm): 29
Weight (g): 222
Location: 6-Drawer Unit 01 on Rack RAA03 [Main Store]

Ser No 074/65
Connector Keyway:


This circuit module is called ‘Filter Band Pass Amplifier’ and is used in the Azimuth Amplifier and Computer box in the BAC1-11 flight control system. The module was produced in SA-245-A1,-A2, -A3, -EA1 and -EA3 configurations.

These circuit modules from the VC-10 computer are typical of construction techniques of the early 1960’s to early 1970’s. The technique of building up electronic and electro-mechanical units in plug-in card modules was a feature of the Bendix PB-20 system Autopilot upon which the Elliott system was based. A number of these cards and modules are common to a range of boxes. However, Elliotts also designed many of their own cards and overall the Autopilot has some 25 different types.  

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