An approach system doesn't have a UPS?
The article said it took a few seconds to kick in.
UPS's don't need time to "Kick In" That is why thet are called
UnInteruptable Power Supplies.
Generator power is another story. Typicall transfer times are
generally in the neighborhood of 10 seconds from a cold start to power
transfer.
Mike Alexander
PP-ASEL
Temecula, CA
See my online aerial photo album at
http://flying.4alexanders.com