Failure Of Pressure Altimeter; Failure Of Left Yc-450Kairspeed Indicator; Of Vhf Radio Set With Two Control Panels - Kazan Helicopters Mi-17-1V Flight Manual

M,,·17·1B. Flight manual
compass. When referring to the magnetic compass the bank and
pitch angles should not exceed 10°.
6.22. Failure of pressure altimeter
(1) Indications
(a) Unstable readings.
(b) Variation of readings with the altitude unchanged.
(c) Unchanged readings with the altitude changing.
(2) Pilot's actions
(a) Check whether the pitot - static tube heater is on.
(b) Set the static pressure selector first to LEFT (nEBMI) and then to
RIGHT (nPABAFI), and assess the correctness of altimeter read-
ings in these positions. If the altitude readings are stable and corre-
spond to the actual condition of flight with the altimeter being fed
from either left or right static vent, leave the static pressure selector
in the position at which the correct readings take place and continue
the mission.
If the indications of altimeter failure persist maintain altitude by re-
ferring to the radio altimeter, second pressure altimeter and rate-of-
climb indicator.
6.23. Failure of left YC-450K airspeed indicator
(1) Indications
(a) Unstable readings.
(b) Discrepancies in readings of the pilot's co-pilot's airspeed Indica-
tors.
(c) Disagreement between the airspeed indicator readings and the ac-
tual flight regime.
(2) Pilot's actions
(a) Check whether the pitot - static tube heater is on. Set the static
pressure selector switch first to LEFT (nEBAFI) and then to RIGHT
(nPABAFI), and assess the correctness of the airspeed indicator
readings in these positions.
If the airspeed readings are stable and correspond to the actual
condition of flight with the airspeed indicator being fed from either
left or right static vent, leave the static pressure system selector in
the position at which the correct readings take place, and continue
the mission.
(b) If the readings are unstable or disagree with the actual condition of
flight with the static pressure selector set to either L (Jl) or R (Fl) re-
fer to the right airspeed indicator.
(c) Make a decision on the possibility either to continue the mission fur-
ther on or land on the nearest aerodrome.
6.24. Failure of VHF radio set with two control panels
(1) Indications
(a) No response of the ground radio station to a request.
(b) No sidetone is heard with the radio operating in the
TRANSMISSION (nEPEAA4A) mode.
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