Amraft Publical~ons
Piper Comanche
2%
(Early Model)
Section
-
4
Normal Procedures
ENGINE
RUN
UP
Brakes et
Warm m
Mixture
...................................................................................................................
Check R~ch
**
NOTE
**
Above 5,000
ft
density altitude, mixture should be leaned for takeoff until, and only until, any
engine roughness is eliminated.
Propeller Control
......................
..
......................................
Check Full Forward
-
Increase rpm
Throttle
........................
..
.........................................................................................
2000 rpm
**
CAUTION
**
Do not exceed 2200 rpm in a routine static test
Manifold Pressure
.......................................................................................................
15 in Hg
Magnetos
...................................................................................................
Check Lei? and Right
Maximum Drop
-
175
rpm
Maximum Difference
-
50 rprn
Carburetor Heat
............................................................................................
Check and Clear
**
CAUTION
**
Avoid prolonged ground operation with carburetor heat on, as the air is unfiltered.
5.0 in Hg
+
.l
or
-
.2 in
.............................................
Check Charging
Check
Oil Pressure
...........................................................................................................
Check Green
Propeller
...........................................
Cycle as Needed to Circulate Oil and Operate Governor
Normal Drop
-
300 to 400 rprn
**
CAUTION
**
DO not exceed a 500 rprn drop for more than a few seconds at a time.
Throttle
............................................................................................................................
Retard
BEFORE TAKEOFF
Fuel Selector
.....................................................................
Leave on Previously Selected Tank
Electric Fuel Pump
..............................................................................................................
On
Flaps
.........................
..
........................
Set for Takeoff (Zero,
9
or
18
Degrees as Desired)
Trim Tab
................................................
Set for Takeoff (Neutral Position for Most Operations)
Directional Gyro
...............................
..
..............................................................
Set Heading
Engine Gauges
.........................
..
.................................................................................
Normal
Strobe Lights
(If
Installed)
...................
..
......
............
...............................................................
On
**
NOTE
**
Engine is warm enough for takeoff when throttle can be opened without the engine faltering.
Copyright:
1993
Page
4-7