AFT Electronic Panel


The B737 AFT electronic panel (pedestal) consists of the following components:

- Fire protection panel
- Cargo fire panel
- Radio panels for COMM and NAV
- Transponder and TCAS
- Rudder and aileron trim
- Microphone selector panels
- Weather radar panel
- Miscellaneous system functions and lights control

At the time when I started to build the AFT electronic panel there have been almost no solutions on the market for USB plug and play devices. Today the situation is completely different. Now there are several  companies on the market that offer USB based radios, TCAS, fire panels, and some more stuff. I build them myself with parts from Cockpitsonic and interface boards from Opencockpits. This was a hell amount of work, but gave me the advantage to add own features.

AFT electronic panel. The numerical keyboard on the printer panel was used to control AES. It became obsolete with AES remote.


Overview of the AFT Electronic Panel interface design. The AFT Electronic Panel has not a dedicated USB Expansion Card. The master cards are connected to the USB Expansion Card of the MIP, located inside the electronic compartment.

- Default frequency for COMM 1 is set to IVAO Unicom 122.800 with System-ON
- Squawk is set by default to 2000 with System-ON
- Selection of COMM1 or 2 as active radio for online ATC voice communication
- Selection of headset microphone CAPT / FO (PTT1 / PTT2) for
  voice communication during online flying)
- Pushback control for airports without AES installed
- Push button for the doors control (open / close)
- Weather radar implementation with
SA_WX1.6 (controlled from weather panel)

SELCAL push buttons are modified for pushback and door control

All panels of the AFT electronic have backlit. The intensity can be regulated with a PWM dimmer.

Overheat/Fire Protection Panel
For the fire protection panel I use a utility called 'Boeing 737NG FIRE SYSTEM', publisher is FSPS. The FSPS implementation of the fire panel is more detailed than the PM implementation. The utility also supports the cargo fire panel, too. Unfortunately I cannot use this feature for the time being, because the layout of the cargo fire panel as I have it seems not to be the B737 standard.

Fire protection panel. The cargo fire panel is not in operation. Needs to be replaced
by a panel with the standard B737 configuration.

Last Change: August 2011