SB 742-1
Classification
Application
Inspection
Inspection
Method
Description
1. Critical:
a. Fuze not set on safe.
M91
Visual
b. Fuze safety wire missing, insecure, or improperly
M57/M91
Visual/Manual
engaged.
c. Ignition cartridge head not below flush with rear edge of
All
Straightedge
fin.
d. Firing plug protrudes above primer head.
All
Straightedge
e. Any propellant increment missing or damaged (cut or torn
M57/M91
Visual
with leaking propellant)
f. Propellant increments not in correct sequence
M57/m91
Visual
g. Any propellant charge container missing or damaged
M900 series
Visual
(broken or cover delaminated with leaking propellant).
h. Propellant charge support assembly missing or
M900 series
Visual
improperly positioned.
i. Fin assembly damaged, distorted, or cracked.
All
Visual
j. Obturating ring missing or broken.
All
Visual
k. WP leakage or evidence of leakage.
M929
Visual
l. One or more shear pins missing.
M91
Visual
m. Crack in projectile.
All HE/WP
Visual
n. Explosive residue on projectile exterior.
M933/M934/
Visual
M57
2. Major:
a. Ignition cartridge missing
All
Visual
b. Any propellant increment damaged where propellant
M57/91
Visual
cannot escape.
c. Propellant charge container damage where propellant
M900 series
Visual
cannot escape.
d. Any component damaged or incorrectly assembled (if not
All
Visual
described elsewhere).
e. Fuze assembly not fully seated.
All
Visual
f. Fuze adapter not fully seated.
All
Visual
g. Fin assembly loose or not fully seated.
All
Visual/Manual
h. Obturating ring not welded/bonded.
All
Visual
i. Obturating ring not flush or below bourrelet diameter.
All
Straightedge/
gage
j. Obturating ring damaged (other than broken
All
Visual
k. Cartridge fails to freely enter profile and alignment gage.
All
Gage
l. Glue, asphalt, wax, or cement on cartridge (bourrelet area
All
Visual/Gage
only).
m. Arrow and/or "this end up" marking missing from pack
M929
Visual
or ctg incorrectly oriented in pack.
n. Fuze not set on "PD".
All with M935 fuze
Visual
o. Fuze support missing from PA153 container.
M900 Series
Visual
p. Fuze label missing or illegible.
M57
Visual
3. Minor:
a. Paint missing in an area greater than 0.25 square inch.
All
Visual
b. Fuze not set in the "PROX" mode.
All with M734 fuzes
Visual
4. Minor:
a. Propellant container discoloration
M900 series
Visual
b. Corrosion on fin.
M900 series
Visual
Previous Page
