p/n 725.0002 REV 3.0
© 2023 TCW Technologies, LLC.
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Upon completion of installation:
The required back-up operating time for the connected equipment should be recorded in
the aircraft logbook with follow-up entries confirming the annual testing results that indicate
that the required operating time is satisfied.
Normal Product Operation:
For normal operation, the following is the recommend operating procedure. These
operating procedures are to be added to the aircraft operating checklist for standard
procedures.
Pre-flight Inspection
If the IBBS unit is mounted in a baggage area, ensure all cargo is loaded and secured at
least 1”
away from the IBBS unit.
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 Product Operations:
during loss of main aircraft electrical power
For emergency operation, the following is the recommended operating procedure and is
the basis for a flight manual supplement.
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.
