CSP
−
E
−
1
ROTORCRAFT FLIGHT MANUAL
Performance Data
MD 500E
(Model 369E)
Revision 14
5
−
20
FAA Approved
5
−
6. Height Velocity Diagram/Gross Weight Limits For Height Velocity
Diagram
Description:
Airspeed/altitude combinations to be avoided in the event of an engine fail-
ure during takeoff are shown in the Height Velocity diagram (Ref.
Figure 5−15).
Conditions:
The height velocity diagram is based on sea level, standard day conditions,
over a smooth hard surface at 3000 pounds gross weight.
Use of Chart:
Observe the cross
−
hatched regions of the Height Velocity Diagram.
These represent airspeed/altitude combinations from which a
successful autorotation landing would be difficult to perform.
Operation within the cross
−
hatched area is not prohibited, but
should be avoided.
The recommended takeoff profile line shows the airspeed/altitude combina-
tions recommended for takeoff.
The unmarked region represents the area in which safe autorotational land-
ings may be performed with average pilot skill and reaction time.
Gross Weight Limits for Height Velocity Diagram (Ref. Figure 5−16)
Description
The gross weight limits for this chart show the reduction in gross weight
required as a function of density altitude in order for the Height Velocity
curve to apply.
Use of Chart
Use chart to determine gross weight at which Height Velocity curve will
apply for other density altitudes above sea level.
Example
WANTED: Gross weight for Height Velocity Diagram
KNOWN: Density altitude = 2000 feet
METHOD: Enter left side of chart at 2000 feet density altitude. Move
right to the line; move down and note 2900 pounds gross weight.
CAUTION
