MD Helicopters MILVIZ MD530F, Rotorcraft Flight Manual, Page: 288 / 326

MD 500
(Models 369HE/HS/HM
)
ROTORCRAFT FLIGHT MANUAL
CSP
−
HE/HS
−
1
Optional Equipment
Emergency Floats
FAA Approved
Revision 6
9
−
27
PART IV NORMAL
PROCEDURES
Checks Prior to Flight:
Check condition and security of stowed float package.
NOTE
: Emergency floats with squib
−
actuated valve are identified by the word
‘‘SQUIB”
clearly visible on float cover.
Check pressure gauge in each float package. If the pressure vessel is at
70
°
F (21.1
°
C), the pressure should read 3000 to 3500 psig.
Indicated gauge pressure will increase (decrease) approximately as tabulated
below per 1
° F (1 ° C) increase (decrease) in temperature of the pressure ves-
sel.
See Figure 1 to verify that pressure is adequate for the anticipated mini-
mum operating temperature.
Charge Pressure Psig/
°
F Psig/
°
C
3000
3100
3500
5.7
5.9
6.6
10.2
10.5
11.9
Set BATTERY−EXT switch in proper position (BATTERY when using ro-
torcraft battery. EXT when using an external power source).
Close emergency float circuit breaker.
Press−to−test. All four circuit indicator lamps should illuminate.
PART V
PERFORMANCE DATA
Hover Performance with Stowed Floats:
No change from that of the basic helicopter.
Height Velocity Diagram:
With floats stowed, Landing Height−Velocity Diagram is unchanged from
that of the basic helicopter.