p/n 725.0002 REV 1.4
© 2021 TCW Technologies, LLC.
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Normal Product Operation:
For normal operation the following is the recommend operating procedure, the following is
the basis for a flight manual supplement. The following is the standard procedures.
Start-up Procedure:
1) Prior to turning on the Aircraft Master Switch, turn ON the IBBS Back-up Power master
switch.
2) Turn on any equipment that derives back-up power from the IBBS product.
3) Ensure the connected equipment successfully boots-up and is operating properly. (During
this period of time the equipment is running off of the back-up battery within the IBBS
product. This test ensures the transfer circuit and back-up battery are properly working)
4) Verify the low voltage warning light is indicating a low voltage condition.
5) Turn on the Aircraft Master Switch; ensure the connected equipment remains energized.
The low voltage warning light should go out.
(If a separate avionics bus is utilized, this may need to be turned ON to continue the operation of equipment
connected to the IBBS output.)
6) Start and operate the aircraft according to normal operating procedures.
Shut-down Procedure:
1) Shut down the aircraft engine using normal procedures.
2) Shut down the Aircraft Master Switch
3) Verify that the equipment that derives back-up power from the IBBS remains ON
4) Turn-off the Back-up Power Master switch, ensure that equipment powers down.
(This procedure further ensures the operation of the transfer circuit within the IBBS.)
Emergency Procedure for loss of main aircraft electrical power:
1) Operate the Aircraft Master Power Switch per the Emergency Procedure checklist already
established for the aircraft.
2) Ensure the Back-up Master Switch is in the ON position.
3) Land aircraft as soon as practical to resolve the loss of main electrical power.
