Kazan Helicopters Mi-17-1V Flight Manual page 104

M,,·17·1B. Flight manual
After switching on of the anti-icing system of one of the engines make
sure its operation is stable and thereafter switch on the anti-icing system
ofthe other engine.
Warning: If an engine shuts down upon switching on of its anti-icing ab-
stain from switching on the anti-icing of the other engine,
leave the icing zone, switch off the anti-icing Of shutdown en-
gine and start it.
(3) If Icing conditions such as (drizzle, fog, wet snow) exist on the ground at
ambient temperatures of +5°C or below switch on manually the main and
tail rotors, pitot static tubes and windshield heaters before taxiing out of
the parking area. For this purpose set the GENERAL-MAN-AUTO
(05Ll\EE PyLtH-ABTOM) selector switch to MAN (PyLtH), the ANTI-
ICING SYSTEM, ENG DUST PR-RIGHT (050rPEB ,QBltIr. my) selec-
tor switch to MAN (PyLtHOE), the ENG DUST PR-LEFT (050rPEB
,QBltIr. my nEB) selector switch to ON (BKIl).
Caution: If the engines have been run on the ground in icing conditions
at gas generator speeds below 80% for more than 5 minutes,
shut down the engines, inspect the air intakes, dust protection
devices, struts, nose cones and inlet guide vanes and remove
ice (if accumulated) following the instructions prescribed in the
helicopter maintenance manual.
(4) The ICING (05nE,QEH) annunciator should come on when the helicopter
encounters an Icing zone. As this takes place, the anti-icing system is ac-
tuated by the signal of the ice detector.
If the ICING (05nE,QEH) annunciator fails to come on upon ice accretion
on the windshield, side blisters and visual icing indicator (delay in delivery
of the icing signal) switch on the anti-icing system and the ice detector
heater manually.
(5) Descend in probable icing conditions at engine gas generator speeds not
less than 86%.
(6) Monitor operation of the anti-icing system by observing readings of the
ammeter indicating the current drawn, the ANTI-ICE ON (nOC
Bl{nIQLtE;HA),L ENG ANTI-ICE (050rPEB ,QBltIr. nEB), R ENG ANTI-
ICE (050rPEB ,QBltIr. nPAB), L DUST PROT FWD
tnss.nsv
nEPE,QH), R DUST PROT FWD (nPAB. my nEPE,QH), L DUST PROT
REAR(nEB. my 3A,QH), R DUST PROT REAR (nPAB. my 3A,QH),
HEATER OK (050rPEB ltICnPABEH) annunciators.
(7) Leave the icing zone and report to the flying control officer if one of the
following events occurs:
(a) The engine outlet oil temperature and the main gearbox Inlet oil
temperature rise above the limits Indicated in para. 2.6.
(b) The GEN 1 FAIL (rEHEPAT. 1 OTKA3An), GEN 2 FAIL
(rEHEPAT. 2 OTKA3An) annunciators come on to indicate failure
of the AC generator.
(c) The current drawn by the main and tail rotors heaters rise above he
maximum limits indicated in para. 7.1.
(d) Occurrence of icing conditions at an ambient temperature below -
5°C.
Note: During flight in icing conditions the KO - 50 combustion heater
may turn off due to icing of its air intake.
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