Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (96)
Page 81 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
96.10.15.1
Set ENGINE DE-ICE switch to ON.
Verify ENGINE DE-ICE ON caution light
illuminates and a slight rise in EGT (or MGT) is
noted.
96.10.15.2
Set ENGINE DE-ICE switch to OFF.
Verify ENGINE DE-ICE ON caution light
extinguishes and a slight decrease in EGT (or
MGT) is noted.
96.10.15.3 Open ENG ANTI-ICE circuit
breaker. Verify ENGINE DE-ICE ON caution light
illuminates and a slight rise in EGT (or MGT) is
noted.
96.10.15.4 Close ENG ANTI-ICE circuit
breaker. Verify ENGINE DE-ICE ON caution light
extinguishes and a slight decrease in EGT (or
MGT) is noted.
96.10.16 Start Fuel Valve
The start fuel valve is used to add additional fuel
to the engine for starting purposes. When the
FUEL VALVE is selected ON and prior to the
START switch being pressed, the START FUEL
switch is placed to ON. It then will be manually
selected OFF around 25% engine rpm.
96.10.17 Operational Check – Start Fuel
Solenoid Valve
96.10.17.1 Disconnect connector (P89S) at
start fuel solenoid.
96.10.17.2
Apply electrical power to helicopter
electrical system.
96.10.17.3
Open ENGINE IGNITION SYSTEM
circuit breaker. Set ENGINE FUEL VALVE and
both BOOST PUMP switches to OFF.
96.10.17.4
Momentarily move ENGINE START
switch on pilot collective stick to START position.
Verify there is voltage at pin A of connector
(P89S). (
NOTE: the starter will be engaged. Do
not exceed starter duty cycle limits).
96.10.17.5 Momentarily pull ENGINE START
trigger on copilot collective stick to ON. Verify
there is voltage at pin A of connector (P89S).
(NOTE the starter will be engaged. Do not exceed
starter duty cycle limits).
96.10.17.6
Set START FUEL switch to OFF
96.10.17.7
Momentarily move ENGINE START
switch on pilot collective stick to START position.
Verify there is NO voltage at pin A of connector
(P89S). (
NOTE: The starter will be engaged. Do
not exceed starter duty cycle limits).
96.10.17.8 Momentarily pull ENGINE START
trigger on copilot collective stick to ON. Verify
there is NO voltage at pin A of connector (P89S).
(NOTE: The starter will be engaged. Do not
exceed starter duty cycle limits).
96.10.17.9
Turn electrical power off.
96.10.17.10 Close ENGINE IGNITION SYSTEM
circuit breaker.
96.10.17.11 Reconnect
connector (P89S) at start
fuel solenoid.
96.11 FLIGHT
CONTROL SYSTEMS
96.11.1 Flight Control System
The flight control system includes force trim and
hydraulic bypass solenoid system.
96.11.2 Force Trim
Magnetic brakes are wired in parallel to the
28 VDC Essential bus through control switches
and the FORCE TRIM circuit breaker. Control
switching is accomplished through a series wired
FORCE TRIM ON/OFF switch located on the
MISC control panel, and normally closed pilot and
copilot push button cyclic stick FORCE TRIM
switches. Force trim system provides spring
forces to maintain control system linkage position
and thus relieve pilot or copilot from the strain of
holding a particular stick and/or pedal position.
FORCE TRIM switches are utilized as necessary
to disengage magnetic brakes, allowing spring