ICA-D212-725 (96)
Page 73 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
the light again illuminates. If, following step
96.8.34.8, the warning light is extinguished, turn
R3 very slowly clockwise until the light just
illuminates.
96.8.34.10
Vary the engine speed above and
below 91% while observing the warning light.
Verify that the warning occurs at 88 to 91%. If
light does not illuminate between 88 and 91%,
repeat steps 96.8.34.8 through 96.8.34.10.
96.8.34.11 Remove
jumper.
96.8.34.12 Close detector cover strips and
tighten screws if high rotor rpm adjustment is not
required.
Figure 96-7.
RPM Limit Detector
96.8.35
Adjustment Procedure – RPM
Limit Warning System (High Rotor RPM
Warning)
NOTE
IF the RPM limit warning system
does not meet the requirements of
paragraph 96.8.32, the system shall
be adjusted in accordance with the
following procedures.
96.8.35.1
With the rotor in flat pitch and the
governor set to MANUAL, slowly increase
throttle until the rotor speed is at 102 to 104.5%
(330 to 339 rotor RPM).
NOTE
The maximum allowable T5317
engine output shaft speed per FAA
Approved Engine Manuals is 6634 rpm
(101% N2) for normal flight operation,
but when torque pressure is 15 psi
or less, the engine overspeed limit is
extended to 6900 rpm (104.5% N2).
96.8.35.2
Loosen screws and slide cover
strips to expose potentiometers.
96.8.35.3
If, following step 96.8.35.1, the
rotor RPM caution light is illuminated, turn R2
clockwise until the light just extinguishes, then
very slowly counterclockwise until the light just
illuminates. If, following step 96.8.35.1, the rotor
RPM caution light is extinguished, turn R2 very
slowly counterclockwise until the warning light
just illuminates.
96.8.35.4
Vary the engine speed to verify
that the warning light illuminates between 102 to
104.5%. If light does not illuminate, repeat steps
96.8.35.3 and 96.8.35.4.
96.8.35.5
Close detector cover strips and
tighten screws.
96.8.36
Fire Detection Warning System
NOTE
S/Ns 30576, 30687, 30931,
30817 and 30599 are fitted with
ENG FIRE “T” handles. All S/Ns
except 30576, 30687, 30931,
30817 and 30599 are fitted with
ENG FIRE and FIRE EXTING
switch-lights
96.8.36.1
The fire detection system
consists of 2 control amplifiers (one for the
engine fire detectors and one for cargo smoke
detector), mounted in the nose compartment,
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