Flight With External Load; Attachment Of External Load After Landing - Kazan Helicopters Mi-17-1V Flight Manual

MI1-17-1B. Flight manual
5.4. Flight with external load
(1) Only the crews skilled in piloting the helicopter with the maximum takeoff
. 'vveight are authorized to fly the
helicopter with external
loads.
A special site is set up on the airfield and a flying control officer is ap-
pointed for training the crews for external load transportation.
Successful execution of flights with external load depends mainly on effi-
cient cooperation of the Pilot with the flying control officer and harmony in
work of the Pilot and the Flight Engineer.
(2) The flying control officer stands on the ground within the Captain's field of
vision at a distance of
50
to 100 m from the point of load attachment (re-
lease) and guides the helicopter to the load by issuing orders through the
radio channel.
After the load comes within the field of vision of the Flight Engineer, fur-
ther precise guidance to the load is effected by Flight Engineer's orders.
The flying control officer reports only the helicopter clearance above the
load in hovering.
(3) After the load is attached and lifted, as well as during approach to the
load release area, the flying control officer assumes control. He reports to
the Captain the load behavior in flight, the load clearance above the
ground, gives permission to proceed from hovering to forward flight.
(4) Training of the crews for flying with external load should be commenced
with external loads up to 1000 kg. The external load weight should be in-
creased up to the maximum value gradually, as the crew experience is
gained.
The maximum weight of external load should not exceed 3000 kg
(5000kg - reinforced load sling) with the helicopter maximum takeoff
weight (including that of the external load) not exceeding 13000 kg.
(5) The helicopter maximum speed for transportation of external load de-
pends on the behavior of external load in each specific case but it should
not exceed 250 km/h lAS.
(6) Depending on actual conditions, attachment of load to the helicopter ex-
ternal load sling system can be carried both with the helicopter landed on
a site near the load or hovering (the latter procedure being used when
landing on a site near the load is impossible).
5.5. Attachment of external load after landing
(1) Lend the helicopter near the load, taxi close to the load so as it is at a dis-
tance of 1 to 2 m from the main LG wheel and set idle power to the en-
gines. To facilitate takeoff and approach to the load it is advisable to land
and taxi so as the load is to the left from the helicopter.
(2) Switch on the SHACKLE CONTROL (ynPABJ1EHVlE), MAIN (OTKP.
3ATlllKA OCHOBH.), AUX (ynp. OTKP. 3AMKA ,[IY6J1VlP.) circuit breClk-
ers.
(3) Set the AUTO RELEASE (ABTOMAT. C6POq·switch to the lower posi-
tion and make sure that the ,[Ir-64 shackle is released which is indicated
by illumination of the SHACKLE OPEN (3AMOK OTKPbIT) annunciator.
(4) The Captain should execute takeoff and proceed to hovering so ClS the
main LG wheels are not more than 1 to 2 m clear of the ground, and
make sure that the power plant and special equipment instruments read-
ings are normal.
5-6