Normal Procedures
CSP-HE/HS-1
ROTORCRAFT FLIGHT MANUAL
MD 500
(Models 369HE/HS/HM)
Revision 6
4-15
FAA Approved
4-3. ENGINE START
F
Cyclic stick trimmed to neutral; friction − ON
RECHECK
Do not attempt engine start with cyclic stick in positions other than
neutral. Damage to rotor head and controls will result.
F
Collectivestick− full down; friction on
RECHECK
F
Twistgrip −
CUTOFF
position
RECHECK
F
Start pump
AS REQUIRED
NOTE
:
Start pump required when using alternate or emergency fuels (Ref. Section II).
F
Rotors
CLEARED
F
Start/ignition button
PRESS AND HOLD
NOTE
:
Starter time limits are 1 minute ON, 1 minute OFF; 1 minute ON, and 23 minutes
OFF.
F
Rotate twistgrip the appropriate amount (based on type of engine control system) for
ignition when
N
1
indicates 12 to 15 percent (see Section II, Minimum N
1
Speed
Starting Recommendations Placard).
NOTE
:
The 250-C20 Series engine has two qualified control systems. They are:
The Bendix system which uses an automatic start mode and the CECO system
which uses a modulated start mode. The 250-C18 Series engine uses only the
automatic start mode.
Automatic Start Mode (Bendix system):
Rotate twistgrip to ground idle for ignition when N
1
indicates 12 to 15 per−
cent.
Modulated Start Mode (Ceco system):
Rotate twistgrip toward ground idle until engine lights
off when N
1
indi−
cates 12 to 15 percent. Monitor TOT and N
1
and adjust twistgrip to acceler−
ate
N
1
to idle while maintaining TOT within specified limits. Insure twist−
grip is in the ground idle
detent once N
1
is at idle (61% − 65%).
NOTE
:
Peaking of N
1
below 15 percent may occur during cold weather starting
conditions. Under these
conditions, a start may be attempted at a minimum of
12 percent N
1
. APU starts are recommended when
normal cranking speed can
not be obtained by using the battery.
CAUTION
