TM-9-6675-262-10
AIMING CIRCLE M2 W/E AND M2A2 W/E
TECHNICAL MANUAL; OPERATOR MANUAL
DECEMBER 2013
TM-9-6675-262-10 - Page 10 of 68
0001-2
REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR)
If your Aiming Circle needs improvement, let us know. Send us an EIR. You, the user,
are the only one who can tell us what you do not like about your equipment. Let us
know why you do not like the design or performance.
All non-Aviation/Missile EIRs and PQDRs must be submitted through the Product Data
Reporting and Evaluation Program (PDREP) Web site. The PDREP site is:
If you do not have Internet access, you may submit your information using an SF 368
(Product Quality Deficiency Report). You can send your SF 368 using email, regular
mail, or fax using the addresses/fax numbers specified in DA PAM 750-8, The Army
Maintenance Management System (TAMMS) Users Manual. We will send you a reply.
Marine Corps: If your Aiming Circle needs improvement, send us an EIR. You, the
user, are the only one who can tell us what you do not like about your equipment. Let
us know why you do not like the design or performance. The preferred method for
submitting Product Quality Deficiency Reports (PQDRs) is through the Marine Corps
Electronic Product Support Web site at http://logcom.usmc.mil/pqdr/. If the above
method is not available to you, put it on a Standard Form (SF) 368, Product Quality
Deficiency Report, and mail it to us at: Marine Corps Logistics Command, PQDR
Section (L15), 814 Radford Blvd., Ste 20330, Albany,
GA 31704.
CORROSION PREVENTION AND CONTROL (CPC)
Corrosion prevention and control of Army materiel is a continuing concern. It is
important that any corrosion problems with this item be reported so that the problem
can be corrected and improvements can be made to prevent the problem in future
items. The term “corrosion” means the deterioration of a material or its properties due
to a reaction of that material with its chemical environment. An example is the rusting
of iron. Corrosion damage in metals can be seen, depending on the metal, as
tarnishing, pitting, fogging, surface residue, and/or cracking. Plastics, composites, and
rubbers can also degrade (also considered to be corrosion based on the above
definition of corrosion). Degradation is caused by thermal (heat), oxidation (oxygen),
solvation (solvents), or photolytic (light, typically ultraviolet) processes. The most
common exposures are excessive heat or light. Damage from these processes will
appear as cracking, softening, swelling, and/or breaking. The US Army has defined the
following nine (9) forms of corrosion used to evaluate the deterioration of metals.
These shall be used when evaluating and documenting corrosion.
UNIFORM (or general attack): Affects a large area of exposed metal surface, like rust
on steel or tarnish on silver. It gradually reduces the thickness of the metal until it fails.
CREVICE: Occurs in crevices created by rubber seals, gaskets, bolt heads, lap joints,
dirt or other surface deposits. It will develop anywhere moisture or other corrosive
agents are trapped and unable to drain or evaporate.
SELECTIVE LEACHING: One element, usually the anodic element of an alloy,
corrodes away, leaving the cathodic element. This can create holes in metal.
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