misleading, incomplete, or unidentifiable.
4. Size of Sample. The number of signals required to
(2) Where rust or corrosion appear give location and
make up a representative sample from a lot for a
extent.
surveillance function test is as follows:
(3) The occurrence of any nonstandard conditions
For check investigation
as directed
or malfunctions classified as defects in paragraphs 10
For classification investigation
50
and 11.
For confirmation investigation
as directed
(4) The occurrence of any nonstandard conditions
5. Sample Selection. Sample signals will be selected
or malfunctions not classified as defects in paragraphs
in accordance with the provisions of SB 742-1 with the
10 and 11, but which in the opinion of responsible
exception that not more than ten signals may be selected
personnel merits consideration.
from any one box.
9. Classification of Defects. Defects observed during
6. Preparation for Test.
inspection and testing will be classified in accordance
a. Number the signals 1 through 50 and identify
with paragraphs 10 and 11 and SB 742-1. Any defects
them as to the box from which they were drawn.
observed which are not listed in paragraphs 10 and 11
b. Immerse the 50 signals (without removing them
70
will be fully described and reported with the ammunition
F. + 10 F.
from their containers) in water at
inspector's recommendation as to classification.
for- 15 to 20 minutes.
Position signals
10. Nonfunctioning Defects.
horizontally 6 to 9 inches below the water surface.
a. Critical.
APE 1901 should be used for this purpose. Wipe
(1) Safety latch missing.
the signals dry and temperature condition them
(2) Safety latch damaged to the extent that the
as indicated below
hooked portion does not protect the primer.
c. c. Temperature condition signals 1 through 25
b. Major.
for 24 hours at 700 + 100F.
(1) Any of the following components missing:
d. Temperature condition signals 26 through 50 for
10
(a) Pull tab.
24 hours at -650 + F.
(b) Tear strip extension.
7. Test Procedure. Launch the signals vertically from a
(c) Striker arm spring.
suitable fixture as soon as possible after temperature
(d) Any other component. Specify.
conditioning. Holding device for hand signals APE 1918
(2) Major damage to components such as:
should be used for this purpose. Signals will not be fired
(a) Pull tab.
when the wind velocity exceeds 15 mph, during
(b) Tear strip extension.
electrical, rain, or snow storms, or during any other
(c) Striker arm spring.
weather conditions that might make the observations
(d) Any other component. Specify.
inaccurate.
(3) Major rust.
8. Observations. All observations of nonstandard
(4) Major corrosion.
conditions and malfunctions, especially those not in-
(5) Signal cannot be removed from container even
cluded among the defects listed in paragraphs 10 and 11
with hand tools such as pliers.
should be described in full detail. Pictorial evidence of
(6) Marking misleading as to type of signal.
nonstandard conditions, whenever pertinent and
c. Minor.
practical, should be included. The observations to be
(1) Marking is unidentifiable but is not misleading as
reported are as follows:
to type of signal.
a. The ignition altitude is measured from the point
(2) Evidence of moisture inside sealed container.
of launch to the point (identified by a puff of smoke)
(3) Tear strip breaks or terminates, preventing the
where the parachute and illuminant assembly eject from
removal of the signal from its container.
the motor assembly.
(4) Removal of signal from container requires use of
b. Altitude (to the nearest foot) of signal after 27
handtools such as pliers.
seconds of burning for signals conditioned at 70 + 10 F.
(5) Pull ring is missing.
only.
(6) Striker arm is cracked.
c. Angle from the vertical (angle between a vertical
(7) Minor rust.
line from the point of launch and a line from the point
(8) Minor corrosion.
of launch to the point of functioning) to the nearest
11. Functioning Defects.
degree.
a. Critical.
d. Burning time (to the nearest tenth of a second)
(1)
Premature burst.
of signal in air. This is the time during which the
(a) Signal bursts in launcher.
illuminant is of good volume, easily visible, and with
(b) Signal bursts within 100 feet of the launch-
color easily distinguishable.
e. All instances of any of the following:
(1) In nonstandard marking state whether
2