FAA SAIB on TCW IBBS

[Andy]

FAA has just released an SAIB on TCW IBBS as fitted to many CubCrafters aircraft:

https://drs.faa.gov/browse/excelExte...dalOpened=true

[Andy]

Related TCW SB here -

https://www.tcwtech.com/wp-content/u...-22-01-A-1.pdf

[sea2jet]

TCW’s email reply:

Mike, If the unit is installed as part of a Carbon Cub in the experimental
category no further action is required. If the unit was installed as part
of a certified aircraft as provided by the Carbon Cub factory, then the
installation was not done under our STC SA04400NY and again no particular
action is required. If the unit was installed in accordance with our STC
SA04400NY the FAA is recommending the unit be further installed in a metal
box that vents overboard. In any case the SAIB is not a requirement, it
is a recommendation, this is not an AD. If desired, an owner may
purchase our secondary enclosure to install the IBBS unit within, however
the particular location and installation area may need to evaluated to see
it the new enclosure will fit the aircraft installation. Lastly, over
more than 10 years of sales into the experimental community and more than
10,000 experimental units in the field, there has never been a failure that
has every emitted anything from an IBBS unit. The FAA has created a test
in response to the Boeing 787 dreamliner issue and has applied this to all
lithium bases systems regardless of their size or actual ability to have a
problem.


Best regards,
Bob Newman
TCW Technologies

[Andy]

The FAA has created a test
in response to the Boeing 787 dreamliner issue and has applied this to all
lithium bases systems regardless of their size or actual ability to have a
problem.

It would be interesting to know what test failure, if any, resulted in the issuance of SAIB 2024-01.

AC 20-184 appears to define the IBBS as a Small/Medium Lithium battery with Means of Compliance specified in Appendix E.

The 787 main battery would be classified as Large and Appendix F would seem to be applicable.

What was the test referenced in the TCW response?

Related discussion and the same TCW response here - https://vansairforce.net/threads/sai...attery.224497/