CSP–900RFM206E–1
Performance Data
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
FAA Approved
Original
5–37
5–8. HOVER CEILING, AEO
Description:
The hover ceiling charts (Ref. Figure 5−31 thru Figure 5−38) show the maximum
hover weight capability, in ground effect (IGE) or out of ground effect (OGE), both
engines operating at take off power for known conditions of pressure altitude and
outside air temperature, or alternately, the maximum hover ceiling for a known
gross weight and outside air temperature.
Separate hover ceiling charts are provided for helicopters equipped with either the
inlet particle separator (IPS) or screen inlet and heater operation.
The phrase, ‘‘A/C On’’ apply to MDHI P/N 900P7250302−101 airDconditioning instalD
lation only.
NOTE
:
The charts are based on an electrical load of 15% per generator (30 amps per
generator). Reduce/increase gross weight capability by 35 LB for each 10%
increase/decrease in total load.
For many operations, a reduction in gross weight capability still allows the aircraft
to operate at a maximum gross weight of 6250 LB. Follow the example shown
below.
Use of Chart:
The following example explains the correct use of the IGE Chart
in Figure 5−31.
Example:
Wanted: Maximum gross weight for hover at 3.5 feet skid height at takeoff power.
Known: PA = 6000 feet; OAT = 24
°
C; cabin heat off and A/C on; 25% electrical
load.
Method: Enter the chart at 24
°
OAT and move vertically to the 6000 PA curve
(dashed lines). At this point, move directly to the left of the chart and
read from the gross weight scale 6325 pounds.
Reduce gross weight capability by 45 LB for A/C on and an additional
35 LB for increased electrical load. Calculated gross weight for hover
is 6255 LB, however the helicopter is certified for 6250 LB only.
Gross weight data above 6250 LB has been provided for calculation
purposes or external load operations only. Weights above 6250
LB must be external and jettisonable.
The instructions for using the IGE hover ceiling charts also apply to the OGE
hover ceiling charts.
NOTE
:
Critical wind azimuth limitations may apply. Refer to Section II.
CAUTION
Содержание MD900 with PW206E
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