REV 2.3
© 2012 TCW Technologies, LLC.
7
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.
Requirements for continued airworthiness:
On at least an annual basis the endurance capability of the IBBS system shall be confirmed and
compared against the back-up endurance required for the connected equipment.
As an alternate to these tests, the IBBS unit may be returned to TCW Technologies for
a loaded endurance test, contact TCW Technologies for details.
Procedure for endurance testing (all applications except electronic ignition
systems):
1) Turn off the Aircraft Master Switch
2) Turn on the Back-up Power Master Switch
3) Turn on all equipment connected to and supplied with back-up power from the IBBS
product.
4) Measure and record at least the following information: The time until the first piece of
connected equipment no longer functions or the time until the output of back-up
power supply voltage drops to 9.5 volts. AVOID allowing the back-up battery voltage
to fall below 9 volts. Allowing the voltage to fall below 9 volts is detrimental to the life
and performance of the battery pack.
5) After completing the endurance test, recharge the IBBS product by operating the
system with the Aircraft Master Switch in the ON position for up to two hours. This
may done by operating the aircraft in conditions known to not require back-up power
or by powering the aircraft system on a suitable ground power source as described
in the section: Ground Base Recharging.
6) Record the results of the endurance testing in the aircraft log book.
7) If the IBBS no longer meets the endurance testing requirement, the back-up battery
may need replacement.
