Cruising; Leaning By Manual Method; Leaning By Egt Method; Descent - Piper PA-24-250 COMANCHE Pilot Operating Handbook

Aircraft Publicauons
P~pcr Comanche
250
(Early Model)
CRUISING
Secllon
-
4
Normal Procedures
**
NOTE * * Operation above Flight Level 220 is not approved.
Set Per Power Table in Section 5 (Performance)
1.)
Leaning By Manual Method:
Move mixture control slowly aft until a loss of power is noted, then enrich mixture slightly
until engine runs smoothly.
2.)
Leaning By EGT Method:
Adjust to 50 degrees Fahrenheit rich of peak EGT.
................................................................
Fuel Tanks ....................
. . . . . . . . . . . . . . . . . . .
Rotate Each Hour
**
WARNING
**
Oxygen is recommended when operating aircraft above 10,000 feet MSL, and required above
12,500 feet MSL. No smoking with oxygen in use.
Engine Gauges ..............................
.........
........................................................................ Monitor
DESCENT
Propeller ...................
. .
....
. .
...................................................................................
Cruise rpm
Manifold Pressure ............. 15 to 17 in Hg
Airspeed rature in Green
Mixture
...................
. . .
...........................................................................
E ~ c h With Descent
APPROACH AND LANDING
Seats .................................................................................................................................. Erect
Belts and Harness
................... . . . .
...........................................................
Fasten and Adjust
Electric Fuel Pump
............................................................................................................
On
Fuel Selector
...................
. . . . .........................................................................
Desired Tank
Area Around Landing Gear Manual Operating Lever ...................................................... Clear
Landing Gear Selector .................................... Down Under 125 mph or 108
kt (Recommended)
Landing Gear Indicator ...........................
. . .
................................................................... Green
Flaps ........................
. . . ...................
As Required Under 100 mph or 87 kt (Recommended)
Trim Tab ...................
. . .
................................................................................ Set for Landing
Mixture
...................
. .
..... . .
.....................................................................
Enrich as Required
Propeller Control
................... . . . .
.............................................. Full Forward - Increase rpm
GUMP Check ........................... . . . . . .......................................................................... On Final
V*p
...........................
. . .
.................................................................................. 83 mph (72 kt)
**
NOTE
**
If crosswind component is above 12 kts, use partial or no flaps and above normal approach speed.
Copyright: 1993
Page
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