MIL-DTL-85110B(AS)
3.3.5.3 Dust. The RRHB shall operate satisfactorily with no malfunctions when:
a. Exposed to the dust and grit particles in combination with hydraulic fluid, jet exhaust
residue and other oily films common to an aircraft carrier deck during flight operations
b. Subjected to the dust tests as specified in 4.2.2.4.
3.3.5.4 Humidity. The RRHB shall operate satisfactorily with no malfunctions when:
a. Exposed to humidity up to 100%, including conditions where condensation, including
frost, takes place in or on the RRHB.
b. Subjected to the humidity tests of 4.2.2.5.
3.3.5.5 Salt fog. The RRHB shall operate satisfactorily with no malfunctions when exposed
to the operational salt sea atmosphere and the salt fog test of 4.2.2.6.
3.3.5.6 Vibration. The RRHB shall be designed to meet the performance requirements of
this specification when subjected to the vibration tests of 4.2.2.7.
3.3.5.7 Rough usage. The RRBH shall be designated to withstand the type of usage that
will be encountered on an aircraft carrier, including being thrown and dragged on carborundum
coated steel decks, and stored or used when subjected to wet conditions (including rain, salt
water, steam, salt air environment, oil, greases).
3.3.6 Reliability. Equipment reliability shall be considered in every phase of the design
process. Techniques used to determine and evaluate the detailed design include analyses, part
selection, derating, and appropriate application guidelines. The acquiring activity shall specify
the mean cycles between failures (MCBF) for each procurement. In meeting this requirement, the
scheduled preventive maintenance recommended by the contractor for service usage and
acceptable to the acquiring activity will be permitted. Successful completing of the testing herein
shall not relieve the contractor of the responsibility for compliance of production units with the
specified reliability and performance requirements during any subsequent testing or service usage
within the limitations specified.
3.3.7 Maintainability. The RRHB shall be designed in accordance with the quantitative and
qualitative maintainability requirements as specified in 3.3.7.1 and 3.3.7.2. The RRHB shall be
maintained at the intermediate level of maintenance as specified in OPNAVINST 4790.2 (see 6.3)
and 3.3.7.1.3.
3.3.7.1 Quantitative.
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