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| MILT81821
Assembly screws and bolts shall be torqued to the proper design
3.3.4.1 Screw assemblies.
values, without overtightening, based on their dimensions, material, and type of application, and
shall be of a single thread type for each size used.
3.3.5 Interchangeability.
Related end item parts shall be interchangeable or replaceable in
accordance with the requirements of MIL--I8500, as applicable to the related end item; however,
this application shall not prohibit the use of rejected or modified parts, as specified herein.
3.3.6 Safety.
The design and construction of the trainer panels shall consider optimum
safety of personnel when installing, operating, adjusting, maintaining or moving the trainer. All
potentially dangerous items, such as high-voltage wiring, high-pressure lines, chemicals, electronic
devices radiating RF (Radio Frequency) energy,. fast-acting mechanisms of landing gear, flight
controls, and speed brakes that may lead to injury of personnel, either by manipulation of the
shall be safety engineered in accordance with
system or as a result of component failure,
requirement 1 of MlL--STD--454 and marked in accordance with 3.3.3.20 herein. All pyrotechnics
(missile squibs, warheads, propellants) shall be inert, The procedures described in MlLSTD882
shall be used to minimize potential hazards and to reduce the possibility of system degradation and
personnel injury. All potential dangers or dangerous situations shall be clearly noted in the trainer
MOM I; all actual related end item hazards shall be represented and shall be appropriately labeled or
marked.
A back-lighted warning sign shall be centrally located on each of the
3.3.6.1 Warning sign.
four sides of all trainers used to demonstrate the operation of fast-acting mechanisms such as
landing gear, flight controls, control surfaces, and speed brakes. The warning sign shall be
illuminated any time the power source is turned on at the trainer, The warning lamp shall be
enclosed in a metal box, the front surface of which shall be of a red translucent material not less
than two (2) by three and one-half (3 1/2) inches and marked in accordance with 3.3.3.20.
A flashing type red warning light shall be provided to indicate
3.3.6.2 Warning lights.
failure of any forced ventilation system installed on applicable trainer panels. On multipanel
trainers, warning lights shall be installed on each panel and shall indicate the specific panel on which
the failure has occurred.
In order to achieve optimum performance of
3.3.7 Human performance/engineering.
instructor, student, and maintenance personnel, and to ensure a high degree of man-machine
compatibility, the trainers shall be designed in accordance with the applicable human engineering
design criteria presented in MILSTD1472. The training equipment shall provide efficient, safe,
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