Learjet 35 - Page 53

Leerjet 35/36 Developed for Training Purposes 2B-29
February 2004
Expanded Normal Procedures
Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . START
The following sequence is performed without the use of a
checklist:
Start-Gen Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..START
The red starter engaged light (if installed) comes on as long
as the starter is powered.
SPR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOLD IN L OR R
Use of SPR is recommended at ambient temperature of 0°F
(-17.8°C) or below. Do not energize SPR at any time other
than during engine start; SPR is not required when OAT is
above 0°F.
Turbine RPM (N2). . . . . . . . . . . . . 10% MIN/FAN ROTATION
10% N
2 takes approximately six seconds and fan rotation
appears at slightly above 10% N
2.
Thrust Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IDLE
Q
AIR IGN annunciator illuminates.
Q
Check Fuel Flow indicator visually for indication of fuel
flow.
Q
Observe ITT indicator for indication of combustion within
five seconds after placing thrust lever in IDLE. If SPR is
used, release the switch at 300-400°C ITT. ITT must not
be allowed to exceed 860°C (on most starts, it does not
exceed 700°C).
Q
Observe fan speed (N1) increasing.
Q
Observe oil pressure indicator; oil pressure should begin
to register at approximately 25% N
2 and within 10 sec-
onds of ignition.
Q
Observe engine parameters while engine is spooling up
to operating speed.
Q
Observe that the START and AIR IGN annunciators
extinguish at 45 to 50% turbine RPM. If the annunciators
do not extinguish and the engine is running normally,
refer to Abnormal Procedures (Starter Engaged Light
Remains Illuminated).