ICA-D212-725 (96)
Page 24 of 90
CHAPTER 96 – ELECTRICAL SYSTEM (96-00-00)
COPYRIGHT
2007 BY DART AEROSPACE LTD.
THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO ANY
OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
4
Date: 11.06.01
Make sure there is no tension on the test leads or
the probes.
96.1.9.1.7
Give special attention to the
WARNINGS , CAUTIONS and NOTES before a
maintenance procedure is initiated. Some
maintenance procedures require the use of toxic
chemicals, extreme temperatures and flammable
materials.
96.1.10
Standard Practices - Electrical
Maintenance or Repairs
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-136 Caps
and/or
Plugs
C-156 Caps
and/or
Plugs
WARNING
UNLESS POWER IS REQUIRED FOR A
MAINTENANCE PROCEDURE, DISCONNECT
BATTERY AND THE EXTERNAL POWER. PUT
A TAG ON THE BATTERY SWITCH TO INFORM
OTHER PERSONNEL THAT WORK IS BEING
DONE.
WARNING
INFORM ALL OF THE PERSONNEL THAT
WORK ON THE HELICOPTER BEFORE YOU
SUPPLY POWER TO THE ELECTRICAL
SYSTEMS.
96.1.10.1
The procedure that follows will
help avoid injuries to personnel and damage to
equipment.
96.1.10.1.1
If an electrical connector is to be
left disconnected, install protective caps and/or
plugs to protect the contacts from shorts and
prevent FOD damage. Use either caps and/or
plugs (C-136) for Electrostatic Discharge Sensitive
(ESDS) equipment, or caps and/or plugs (C-156)
for other non-ESDS sensitive equipment.
96.1.10.1.2
If a circuit breaker must remain
open until a maintenance procedure is complete,
install a clip or a plastic cable strap under the
circuit breaker button. Put a tag on the circuit
breaker to inform other personnel not to set the
circuit breaker to the closed position.
96.1.10.1.3
If a switch must remain open or
closed until a maintenance procedure is complete,
put a tag on the switch to inform other personnel
not to touch the switch.
96.1.10.1.4
Inform all of the personnel that
work on the helicopter before you supply power to
the electrical systems.
96.1.11
Standard Practices - Electrical
Work in Confined Spaces
96.1.11.1
Some equipment installations are
in confined areas and access to the test points
can be difficult. When you do a test on a powered
circuit in a confined area follow these precautions:
96.1.11.1.1
Have the applicable fire safety
equipment available when you do a maintenance
procedure.
96.1.11.1.2
Before you start work in a
confined area, look at the wiring diagrams of the
applicable electrical systems and at the location of
the equipment you will test. Make a note of the
location of the high voltage areas near the
equipment you will test.
96.1.11.1.3
Be careful around control cable or
mechanism. Movement of engine or flight
controls can cause movement of control cables or
rods.
96.1.11.1.4
For systems not tested, set the
applicable circuit breakers to the open position.
96.1.12
Standard Practices - After
Electrical Maintenance or Repairs
96.1.12.1
After completing a task on any
system, make sure you do the steps that follow
before you return the helicopter to the flight
configuration.
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