R.A.I. Approval Letter 97/3147/MAE
dated 30 July 1997
The information contained herein supplements the information of
the basic Rotorcraft Flight Manual.
For limitations, procedures and performance data not contained
in this appendix, consult the basic Rotorcraft Flight Manual.
ENGINE COMPARTMENT FIRE
EXTINGUISHERS
The engine compartment fire extinguishers installation P/N 109-0811-39
consists of two systems, each of which can be used to discharge the
extinguishing agent into the desired engine compartment.
Each system consists of a bottle, containing HALON 1301, located behind the
engine bay above the baggage compartment, and the necessary tubing to carry
the extinguishing agent into the engine compartments.
The installation also includes a control panel located on the overhead console,
supports, electrical components and attaching hardware.
Each bottle is provided with an electronic pressure sensor connected with a
pilot-lamp located into the avionic bay of baggage compartment to allow an
easy check of the bottle pressure status (pilot-lamp illuminated with low
pressure inside the bottle).
Moreover each bottle is connected to a disc-type discharge indicator, visible
from the helicopter exterior, for an easy check of the bottle charge.
The control panel incorporates two pushbuttons, protected by guards and a
three position selector switch.
The pushbuttons illuminate putting in evidence the wording FIRE to indicate
the presence of fire in an engine compartment and permit to arm the fire
extinguisher system and to operate the fuel shut-off valve to isolate the
affected engine (S/OFF wording illuminated). The selector switch, which is
spring-loaded to the central position, permits the discharge of one bottle when
set to BTL 1 (2) and the discharge of the second bottle, if required, when set
to BTL 2 (1).
RFM A109E
APPENDIX 2
Page1of9
Rev. 54
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