MIL-DTL-62542C
4.7.7 Steam and water jet cleaning. Using alkaline steam cleaning compound, the BSLA
shall be cleaned for 10 minutes each as specified. Water exclusion as specified in 3.5.6.1 and
performance shall not deteriorate due to cleaning. The procedure for steam and water jet cleaning
shall be as follows: The jet shall be applied perpendicular to and not more than one foot from the
surface to be cleaned for steam or water jet cleaning. The cleaning rate shall be 1 square foot per
minute and the jet pressure not less than 100 psi (689.5 kPa) nor more than 110 psi (758.4 kPa).
4.7.8 Human engineering factors. The force required to operate the manual override
shall not exceed 23 lbs.
4.7.9 Corrosion resistance. Component protection and coating adherence shall be equal
to or exceed that provided by 1020 steel, hot-dip galvanized in accordance with ASTM A123, or
electro-galvanized 0.75 mil minimum thickness in accordance with ASTM B633 (or minimum
coating thickness of 0.75 mil on pre-galvanized sheet 0.063 in. or less), with zinc phosphate
pre-treatment, epoxy prime, and CARC top coat. A proposed alternate design shall be compared
to a galvanized sample (as described above) using ASTM D522 and accelerated corrosion test
GM 9540P, method B, 120 cycles, or until prior failure of one of the items with defects such as
extensive corrosion at scribe or significant penetration of base material.
4.7.10 Identification evaluation. The presence of the required markings shall be visually
verified on the BSLA. After performing all environmental tests in 4.8, the BSLA marking shall be
re-inspected for readability.
4.7.11 Safety. The BSLA shall be continuously evaluated for safety hazards throughout
the R/M test.
4.8 Environmental conditions verification. The mission essential functions of the BSLA
shall be verified under the dust and low and high temperature environmental conditions specified
herein.
4.8.1 Dust. The BSLA shall be subjected to dust contamination for one exposure cycle
in accordance with Method 510.3 of MIL-STD-810 or equivalent and tested without being
cleaned in conjunction with the R/M tests. Prior to conducting the mission essential functions of
3.3.6, the BSLA in the fully extended position shall be tested for dust contamination. The BSLA
shall not be cleaned until the R/M verification is completed. An evaluation shall then be made to
verify that the BSLA's mission essential functions and reliability/maintainability are not adversely
affected by exposure to a dust laden environment.
4.8.2 Temperature. The BSLA shall be subjected to the specified operating and storage
temperatures in conjunction with the R/M tests. An evaluation shall then be made to verify that
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