89000004-200
KA 310 STC Installation Manual
Rev 0
Page 3-8
© Honeywell International Inc. Do not copy without express permission of Honeywell.
3.9
Cable and Wiring Considerations
KA 310 wiring will be installed in accordance with AC 43.13-1B Chapter 11, (Section 8 – Wiring
Installation Inspection Requirements, Section 10 – Service Loop Harnesses, Section 11 – Clamping,
Section 15 – Grounding and Bounding, and Section 16 – Wire Marking). Refer to Table 3-5 for wire types.
Refer to Section 5 Connector Pinout Information and APPENDIX B Interconnect Diagrams for the
appropriate wiring connections to assemble the wiring connector.
3.9.1
Shield Termination
When terminating shield grounds to the outside of KA 310 system backshells or ground studs for non-
conductive connectors, it is recommended to apply the solder sleeve as shown in Figure 3-4. This is to
prevent overcrowding inside the backshell while still providing an acceptable method of grounding the
shield.
UNIT BACKSHELL
(3.00)
Figure 3-4 Termination Procedure
3.10
Electrical Bonding Considerations
The KA 310 must be electrically bonded to the airframe. This is accomplished by ensuring that the
mating surfaces such as the KA 310 mounting bracket provide a low impedance electrical path. The
mating surfaces must be free of all paint and other non-conductive elements and should be burnished to
ensure a good bond.. Electrical bonding begins with the equipment attach point(s) such as the mounting
rack or the instrument panel. Ensure good metal-to-metal bonding as brackets and shelves are
assembled and installed. The electrical bond between the following shall be less than or equal to 2.5
milliohms:
(1)
KA 310 and the airplane ground
(2)
KA 310 to connector P3101, and KA 310 to Connector P3102 (when installed)
Compliance should be verified using a calibrated milliohm meter. Any paint removed to meet the
bonding requirement should have a corrosion resistant protective coating applied that meets the
specification found in AC 43.13-1B.
REF:
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UP793797
