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|  MIL-C-18244A(WEP)
Dielectric Strength - Each circuit of electrical and electronic components shall
4.3.5.2
be subjected to a test equivalent to the application of a root mean square test voltage of three times
the maximum (but not less than 500 v) surge d.c. or maximum surge peak a.c. voltage to which the
circuit will be subjected under service conditions. The test voltage shall be of commercial frequency
and shall be applied between ungrounded terminals and ground, and between terminals insulated from
each other, for a period of 1 minute. Test shall be accomplished at normal ground barometric
pressure. No breakdown of insulation of air gap shall occur. Circuits containing capacitors or
other similar electronic parts which may be subject to damage by application of above voltages shall
be subjected to twice the surge peak (but no less than 100 v) operating voltage for the specified period.
If the maximum peak operating voltage is greater than 700 v, the rms value of the test voltage shall
be 1050 v greater than 1.5 times the maximum peak operating voltage. Electrical and electronic
components shall also be tested for resistance to air gap breakdown at the maximum altitude specified
in the altitude test.
The automatic flight control system and components,
4.3.5.3
Radio Interference -
or both, shall be assembled and arranged in a manner as specified in the system or component
specification with interconnecting cables and supporting brackets representative of an actual installa-
tion. Provisions shall also be made for inverting all components with respect to the ground plane or
positioning in such a manner as to permit measurements from the bottom of all components.
Measurement of radiated and conducted interference limits shall be made in accordance with Specifi-
cation MIL-I-6181 with the system switches, controls and components operated as in actual service.
Measured values shall not exceed the limits specified in Specification MIL-I-6181.
Acceptance Tests - Acceptance tests are all the sampling and individual tests
4.4
specified herein and in the system, or component specification, exhibit, or other requirements which
are to be accomplished on an article or articles submitted for acceptance under contract to determine
acceptablility under the requirements of the procurement document. When these tests are appropriate,
they will be required by the procurement document or detailed specification. Contractors' records
of all inspection work and tests giving the quantitative results of tests required to determine com-
pliance with the requirements and tests specified herein and in the system or component specifications
shall be kept complete and shall be available to the procuring activity representative at all times.
The record or report of inspection and tests shall be signed or approved by a responsible person
specifically assigned by the contractor. Acceptance testing shall be accomplished by the contractor
on articles submitted for acceptance under the contract or purchase order. Acceptance or approval
of material during the course of manufacture shall in no case be construed as a guaranty of the
acceptance of the finished article.
4.4.1
Individual Tests - Each component or system shall be examined to determine
conformance to this specification and the system or component specification with respect to material,
workmanship, dimensions and markings, in addition to the individual tests specified by the system or
component specification in the sequence specified therein.
4.4.2
Sampling Tests - One each component or system shall be selected at random by
the procuring activity representative as a representative sample from each 100 systems or components.
or fraction thereof delivered on the contract or purchase order and subjected to the sampling tests.
When the component or system fails to meet the specified sampling tests, acceptance of all comp-
onents or systems will be withheld until the extent and cause of failure is determined. Additional
components may be selected and tested if required to aid in determination of extent and cause of
failure. For operational reasons, individual tests may be continued pending completion of investiga-
tion of a sampling test failure, but the final acceptance of components or systems is contingent upon
the procuring activity inspector's decision regarding the overall compliance of the product with speci-
fication requirements, If investigation indicates that the defect(s) may exist in items previously
accepted, full particulars concerning the defect(s) found, including recommendations for correction,
shall be furnished to the procuring activity.
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