Kazan Helicopters Mi-17-1V Flight Manual page 187

M,,·17·1B. Flight manual
- before donning the parachute, feed the right leg loop through a slide
with lock. The slide is designed to fix the disconnector in such a
way that, the parachute being donned, the lock is on the external
side (the lock latch may be at any position).
- secure the lock of the mask disconnector on the parachute strap;
- feed the right leg loop through a sling bracket and insert its adapter into
the parachute lock;
- fasten the snap hook of the disconnector tie to the bracket and adjust
the tie lenght in such a way that it does not obstruct the pilot's
movement in flight and at the same time it should not be too long;
- connect the mask to the regulator, don the mask and adjust it to fit your
face;
- check the mask for air-tightness: close the hole of the outlet valve seal
with finger and make an exhalation. If it proves to be impossible, the
mask is airtight and is properly fitted
- connect the disconnector hose to the mask connector;
- moothly and fully open the regulator valve and using the pressure gage
make sure that there is oxygen in the bottle;
- set the continuous supply valve handle to ON position and to make sure
the oxygen is supplied to the mask make several inhalations and
exhalations. The flow indicator should be at upper position. Set the
continuous supply handle to OFF position.
- set the additional oxygen valve handle to 100% O
2
position and make
several inhalations and exhalations. If breathing is not hindered and
the oxygen flow indicator float responds to inhalation/exhalation, the
oxygen equipment set is considered OK;
- close the oxygen supply valve and relieve pressure from regulator mak-
ing several inhalations and exhalations;
- after the flow indicator float stops responding to respiration make sure
the pressure gage reads 0 kgf/cm
2
and pull the mask off;
- set the handle of additional oxygen valve to MIXTURE position.
Warning: 1. In case of flight to an altitude of more than 4000 m don the
mask on the ground.
2. In order to prevent an early failure of oxygen regulator after
closing the valve release obligatory the oxygen from the
regulator.
(5) To use the oxygen equipment in flight proceed as follows:
- make sure that the additional oxygen handle is to MIXTURE position
and continuous supply handle is to OFF position;
- the helicopter being on the ground, don the mask and open the oxygen
supply \/al\/e;
- monitor the oxygen supply to the mask by how easy is the respiration
and by motion of flow indicator float;
- monitor the oxygen presence using the pressure gage. In case of bottle
pressure decrease to 25 kgf/cm
2
report it to Captain;
- if you do not feel well and there are difficulties in breathing set the con-
tinuous supply handle to ON position, check that the oxygen supply
valve is open and report to Captain;
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