Autorotation Landing - Eurocopter AS 350 83 Flight Manual

FLIGHT MANUAL
.SECTION 3.1
EMERGENCY PROCEDURES
1 INTRODUCTION
The procedures outlined in this section deal with the conmon types of
emergencies; however, the actions taken in each actual emergency must
relate to the con1Jlete situation.
Throughout this section, "Land immediately", "Land as soon as possible"
and "Land as soon as practicable" are used to reflect the degree of
urgency and are to be interpreted as follows:
-Land (or ditch) immediately
.
-Land as soon as possible: land at the nearest site at which a safe
landing can be made
-Land as soon as practicable: extended flight is not recommended. The
landing site and duration of the flight are at the discretion of the
-pilot.
2 AUTOROTATION LANDING
2.1 Autorotation Landing Procedure following Engine Fgilure
-Set low collective pitch.
-Maintain NR in the upper part of the green band.
-Establish approximately 65 knots (120 km/h) airspeed.
-Select the OFF/IDLE/FLIGHT selector to OFF.
-According to the cause of loss of the engine:
.Re-light the engine (see paragraph 3.2 of this Section).
.Otherwise : close the fuel shut-off valve
switch off: generator
alternator (if installed)
electrical power master "ALL-OFF" switch
(if smell of burning).
-Manoeuvre to head the helicopter into the wind in final approach.
-At a height of approximately 65 ft (20 m) above the ground, flare
.
to a nose-up attitude.
-At height 20-25 ft (6-8 m) and at constant attitude, gradually apply
collective pitch to reduce the sink-rate.
-Resume level attitude before touch-down, and cancel any side-slip
tendency.
-Gently reduce collective pitch after touch-down.
~ : 1) It is possible that the tail skid may touch the ground first.
2) The rate of descent at 65 kt is 1800 ft/min.
2.2 Landing after Engine Failure in Hover I.G.E.
-Do not reduce collective pitch.
-Control yaw.
-Cushion touch-down by increasing collective pitch.
-Reduce collective pitch as soon as the aircraft is on the ground.
.
DGAC Approved: 350 83 3. 1
I A I 8 I C I F I 97-40 Page 1