Can I fly it at night?
No, "or which has not subsequently been certified with such a system
installed"
91.215(b)
(3) Notwithstanding paragraph (b)(2) of this section, any aircraft
which^M
was not originally certificated with an engine-driven electrical
system or^M
which has not subsequently been certified with such a system
installed,^M
balloon or glider may conduct operations in the airspace within 30
nautical^M
miles of an airport listed in appendix D, section 1 of this part
provided^M
such operations are conducted--^M
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