(1) Nonstandard marking.
State whether
5. Sample Selection. Sample signals will be selected
misleading, incomplete or unidentifiable.
in accordance with the provisions of SB 742-1 with the
(2) Rust or corrosion. Give location and
exception that not more than eight signals may be
extent.
selected from any one box.
(3) The occurrence of any of the nonstandard
6. Preparation for Test. a. Number the signals 1
conditions or malfunctions classified as defects in
through 48 and identify them as to the box from which
they were drawn.
(4) The occurrence of any nonstandard
b. Immerse signals 1 through 24 (without
conditions or malfunctions not classified as defects in
cartridges and without fiber containers) in water at 70
10F for 15 to 20 minutes. Position signals horizontally
responsible personnel merits consideration.
6 to 9 inches below the water surface. APE 1901 should
9. Classification of Defects. Defects observed during
be used for this purpose. Signals will be wiped dry and
inspection and testing will be classified in accordance
tested as outlined in paragraph 7 below within two hours
after removal from the water.
c. Signals 25 through 48 will receive no treatment
and 11 will be fully described and reported with the
prior to testing.
7. Test Procedure. a. The signals will be projected
classification.
from a rifle grenade launcher of the M7 series attached
10. Nonfunctioning Defects. a. Critical
to the muzzle of a service rifle using caliber .30 grenade
(1) Tape disk and onion skin disk missing.
cartridge M3. The rifle will be fired in a vertical position
(2) Tape disk and onion skin disk damaged to
mounted on Holding Device APE 1902. Signals will not
the extent that the propelling charge can escape.
be fired when the wind velocity exceeds 15 mph.
b. Major.
Signals with cracked, bent, or otherwise distorted bodies
(1) Major damage to components such as:
or stabilizer assemblies will not be fired but will be
(a) Container bulges, indicating serious
gas formation.
below.
(b) Identification top disassembled to the
b. Cartridges packed with corresponding signals
extent that the waterproof seal is broken.
will be used in these tests unless their use is precluded
(c) Identification top damaged to the
because they are not standard for the rifle being used.
in which case, other rifle grenade cartridges that are
extent that the waterproof seal is broken.
standard for the rifle being used may be substituted. If
(d) Either of the following cracked to an
substitute cartridges are used, the code for the lot will
extent which precludes use of the signal:
not apply to the cartridges packed with the signals.
1 Case
8. Observations. All observations of nonstandard
2 Stabalilizer
conditions and malfunctions, especially those not
(2) Major rust.
(3) Major corrosion.
11 below, should be
described in
full detail. Pictorial
c. Minor.
evidence of nonstandard conditions, whenever pertinent
(1) Plug pulled out of assembly.
and practical, should be included. The observations to
(2) Identification top not fully sealed.
be reported are as follows:
(3) Identification top inadequately lacquered.
a. Time (to the nearest tenth of a second) from
(4) Cork plug not removable by hand.
firing to expulsion of the pellets from their case (for
(5) Minor rust.
information purposes).
(6) Minor corrosion.
b. Persistency of smoke density-good, fair, poor).
11. Functioning defects. a. Critical.
c. Color of smoke (visually-correctness and
(1) Signal bursts on launcher or less than 50
distinguishability).
feet from launcher.
d. Functioning altitude to the nearest foot. APE
(2) One or more smoke pellets wrong color.
1908 should be used for this purpose.
b. Major
e. Number of pellets which fail to emit smoke.
(1) Misfire.
f: Time (to the nearest tenth of a second) from ignition
(2) Hangfire.
of the first pellet to the extinction of the last pellet.
(3) Signal functions at less than 15o) f-et but
(Total burning time.) .
not less than 50 feet from launcher.
g. Total time at least three pellets burn together.
(4) Stabilizer assembly bursts.
(5) Stabilizer assembly ruptures.
h. All instances of any of the following:
(6) Stabilizer assembly separates from body.
(7) Three or more pellets fail to emit colored.
2