Day And Night Flying In Adverse Weather Conditions (Ifr) - Kazan Helicopters Mi-17-1V Flight Manual

M,,-17 -1B. Flight manual
parking area with the <!lP-1 00 taxi light on.
4.18. Day and night flying in adverse weather conditions (IFR)
(1) Before proceeding to flying in adverse weather conditions thoroughly
study the general weather conditions in the area of anticipated flights. In
so doing, pay special attention to presence and severity of icing, the wind
speed and direction. It is allowed to fly in clouds at altitudes up to 3500 m.
(2) Before taxiing out of the parking area make sure the circuit beakers and
switches of all the systems required in the anticipated flight are on, the
autopilot, gyro horizons, turn indicator, MF and VHF ADF (APK-15 and
APK-Y,Q), compass system, radio altimeter, windshield wipers operate
normally, the clock is wound up and correctly set, functionally check the
,QltlCC-15 doppler ground speed and drift angle indicator. The pressure
indicated by the pressure-actuated altimeter, with the pointers set to zero,
should be equal to the actual aerodrome pressure. The Pilot-Navigator
should make sure the compass system is on, the fix latitude is entered,
the mode selector switch is set to MH (MK) and the ,QVlCC-15 doppler
system operates normally, which is displayed by illumination of the
OPERAT (PA60TA) annunciator on its control panel.
Notes: 1. The gyroscopic instruments should be switched on not later than
3 to 5 min before takeoff.
2.Bear in mind that with the «71APo-1a» HF radio transmitting, the
MF and VHF ADF (APK-15 and APK-Y,Q) may experience inter-
ference.
(3) At an ambient temperature of +5°C or below switch on the pitot tubes
heaters before taxiing out of the parking area and switch them off after
taxiing to the parking area, irrespective of presence or absence of icing
conditions.
If ground is covered with snow or during flying in adverse weather condi-
tions (at ambient temperatures of +5°C or below) switch on the pitot static
tubes heaters after starting the engines.
At subzero ambient temperatures, to avoid misting and icing of the flight
compartment canopy, switch on the flight compartment heating system,
the\JVindshield and clock heaters before taxiing out of the parking areC!,
and switch on the windshield wipers, if necessary.
Before taxiing out of the parking area at an ambient temperature of +5°C
or below switch on the engine anti-icers to prevent icing of the air intakes
and ingress of ice into the engines, for this purpose set the ANTI-ICING
SYSTEM. ENG DUST PR-LEFT (060rPEB ,QBVlr.
my
IlEB) switch to
ON (BKIl) and the ENG DUST PR-RIGHT (060rPEB ,QBVlr.
my
nPAB) switch to MAN (PYLJHOE).
(4) The Pilot-Navigator should set the chart angle for the selected route on
the co-ordinate indicator of the ,QVlCC-15 doppler system, set the dis-
tance and track angle error to zero, sWitch off the control panel by de-
pressing the OFF (BbIKIl) button located on this control panel.
(5) After taxiing to the takeoff position slave the compass system, set the
heading selector to the takeoff magnetic heading, and make sure that:
(a) The radio altimeter is on and the alert altitude selector is set as re-
quired.
(b) The gyro horizon is energized (the power failure flag is out of view
on the Ar6-3K gyro horizon scale).
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