Night Flying In Normal Weather Conditions - Kazan Helicopters Mi-17-1V Flight Manual

M.. -17-1B. Flight manual
When passing over the emergency radio station the heading indica-
tor reading reverses by 180 0
•
Notes: 1. At great distances from distressed persons the MAX-MIN
(6-M) selector switch on the VHF ADF control panel
should be set to MAX (6) (high sensitivity).
At small distances from distressed persons set the above
selector switch to MIN (M) (low sensitivity) to reduce oscil-
lations of the heading Indicator pointer.
2.The P-863 transceiver transmission may interfere with the
VHF ADF. In this case set the VHF ADF INTERLOCK
(6nOKlIIPOBKA APK-Y,Q) switch to ON (BKn).
3.ln performing search and rescue operations by night ex-
tend and switch on the np<l>-LJM search lights.
4.16. Flying (hovering) over unmarked terrain using ,QlIICC-15 doppler system
(1) The hovering and low speed Indicator provides visual indication of the
grol:lnd speed within the following speed ranges:
o
to 50 km/h forward.
o
to 25 km/h backward.
o
to 25 km/h to the left and to the right.
(2) The along-track and cross-track speeds are displayed by the figure marks
set against indexing pointers, the vertical speed is indicated on the dial in
the indicator left portion by the triangle white pointer. Before takeoff
switch on the doppler system by setting the DOPPLER (,QlIICC) circuit
breaker on the pilots' overhead panel and the DOPPLER (,QlIICC) switch
on the pilots' RH console to ON (BKn).
(3) In hovering observe indications of the indexing pointers of the hovering
indicator.
Apply the control stick in a direction opposite to extension of the indexing
pointers, trying to keep them within the circle in the indicator centre. The
vertical speed indexing pointer should be set to "0".
When the terrestrial horizon is not seen, hover with the use of the doppler
indicator, monitoring the helicopter attitude by referring to the gyro hori c
zon and other flight and navigation instruments.
Check the hovering height by reading the radio altimeter.
The hovering indicator provides correct readings up to an altitude of not
more than 1000 m.
Upon attainment of an airspeed exceeding 50 km/h the OFF (BbIKn) an-
nunciator on the hovering indicator comes on to Indicate deactivation of
the hovering indicator.
4.17. Night flying in normal weather conditions
(1) Procedure of start, ground test and shutdown of the engines is the same
as for the day. Before start besides the circuit breakers switched on for a
day flight, switch on the LAND LIGHTS (<l>APbl), NAV LTS (AHO), FORM
LIGHTS (CTPOEB.OrHlII) circuit breakers on the electric overhead con-
trol panel RH CB panel and set the DOME LT RED - WHITE (nnA<l>OH
KPACHbIVl- 6Enb1Vl) selector switches to WHITE (6EnbIVl) on the elec-
tric overhead control panel LH and RH switch panels. Set the red lighting
4-22