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MIL-F-8615D
3.6.2.2 Internal.  The item specification shall state the permissible internal
leakage for all operating conditions.
3.6.2.3 Plug-in units.  When applicable, the item specification shall state
the maximum allowable fuel loss when plug-in units are removed and reinstalled.
3.6.3 Strength.  The specific requirements of each of the following para-
meters shall be stated in the item specification as applicable.
3.6.3.1 Mechanical load.  The component shall be capable of withstanding
normal operating maintenance loads without distortion or failure.  The minimum
design value of torque for installation and removal of fittings, fasteners,
etc., shall be at least 125 percent of the normal maximum.
3.6.3.2 Shock resistance.  The component mounting shall assure safe retention
in place and not be a cause for leakage of fuel in the event of a shock load
within the envelope of the applicable structural design criteria.
3.6.3.3 Fatigue resistance.  The component shall be capable of withstanding
the vibrations and acoustical noise of its installed environment as well as
any other external force input that causes repeated stress in any portion of
the component. The vibration and acoustical noise environment shall be speci-
fied in accordance with MIL-STD-810.
3.6.4 Bonding.  Bonding for electrical requirements and lightning protection
shall be in accordance with MIL-B-5087.
3.6.5 Electrical.  Electrical devices shall be compatible with the aircraft
electrical system as well as power in accordance with MIL-STD-704 and shall
satisfy the applicable requirements of MIL-E-7080 and MIL-E-25499.
3.6.5.1 Electrical connector.  Electrical connectors shall be in accordance
with MIL-C-38999, or in accordance with the applicable aircraft specification.
3.6.5.2 Wiring.
Electrical wiring shall be in accordance with MIL-W-5088.
3.6.5.3 Solenoids.  Solenoids in fuel system components shall be continuous
duty in accordance with MIL-S-4040.
3.6.5.4 Motors.  Electrical motors shall satisfy the applicable requirements
of MIL-M-7969 and MIL-M-8609.
3.6.5.5 Electrical fault containment.  The assembly housing shall be completely
capable of containing any internal fault without failure of the housing.  In no
case shall an electrical short or internal explosion propagate to the outside
of the housing or generate an unsafe condition.
7

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