A statistically adequate sample of pyrotechnics from each
batch produced should be activated and observed for proper operation.
The tests in section 4 of part 1 should
be performed once for every 10 batches of signals produced; however,
such tests should be conducted at least once every year, but need
not be conducted more often than once in every calendar quarter. Where
production of a signal is continuous, the tests in section 4 need only be performed once
every year if the Administration is satisfied that the quality control
procedures being followed together with continuous production methods
make more frequent testing unnecessary.