Piper Twin Comanche B User guide

PIPER
TWIN
COMANCHE
B
OWNER’'S
HANDBOOK

Piper Aircraft Corporation, Lock Haven, Pa.
U.S. A.

NOTICE
THIS
HANDBOOK
IS
NOT
DESIGNED,
NOR
CAN
ANY
HANDBOOK
SERVE,
AS
A
SUBSTITUTE
FOR
ADEQUATE
AND
COMPETENT
FLIGHT
INSTRUCTION,
OR
KNOWLEDGE
OF
THE
CURRENT
AIRWORTHINESS
DIRECTIVES,
THE
APPLICABLE
FEDERAL
AIR
REGULATIONS,
AND
ADVISORY
CIRCULARS.
IT
IS
NOT
INTENDED
TOo
BE
A
GUIDE
OF
BASIC
FLIGHT
INSTRUCTION,
NOR
A
TRAINING
MANUAL.
THE
HANDBOOK
IS
DESIGNED:
1.
TO
HELP
YOU
OPERATE
YOUR
TWIN
COMANCHE
WITH
SAFETY
AND
CONFIDENCE.
TO
MORE
FULLY
ACQUAINT
YOU
WITH
THE
BASIC
PERFORMANCE
AND
HANDLING
CHARACTERISTICS
OF
THE
AIRPLANE.
3.
TO
MORE
FULLY
EXPLAIN
YOUR
TWIN
COMANCHE'’S
OPERATION
THAN
IS
PERMISSIBLE
TO
SET
FORTH
IN
THE
AIRPLANE
FLIGHT
MANUAL.
IF
THERE
IS
ANY
INCONSISTENCY
BETWEEN
THIS
HANDBOOK
AND
THE
AIRPLANE
FLIGHT
MANUAL
APPROVED
BY
THE
F.A.A,
THE
AIRPLANE
FLIGHT
MANUAL
SHALL
GOVERN.
Revised
text
and
illustrations
shall
be
indicated
by
a
black
vertical
line
in
the
margin
opposite
the
change.
Additional
copies
of
this
manual,
Part
No.
753
697,
may
be
obtained
from
your
Piper
Dealer.
Published by
PUBLICATIONS
DEPARTMENT
Piper
Aircraft
Corporation
753 697
Issued: August1965
Revised:
October
1973

SECTION |
SPECIFICATIONS
Performance .
Weights
Power Plant .
Fuel and Oil .
Baggage Area
Dimensions
Landing Gear.

TWIN COMANCHE ‘‘B” SECTION I
SECTION |
SPECIFICATIONS
PERFORMANCE
Performance figures are for airplanes equipped for cross-
country transportation and flown at gross weight under standard
conditions at sea level or stated altitude. Any changes in equip-
ment may result in changes in performance.
Take-off Run (short field, ft) 1250
Take-off Distance Over 50-ft Barrier (ft) 2160
Vmc
(mph)
(as
determined
by
the
F.A.A.)
90
Stalling Speed (gear and flaps down, power off, mph) 69
Stalling Speed (gear and flaps up, power off, mph) 76
Best Rate of Climb (ft per min) 1460
Best Rate of Climb Speed (mph) 112
Best Angle of Climb Speed (mph) 90
Single Engine Rate of Climb (ft per min) 260
Best Single Engine Rate of Climb Speed (mph) 105
Absolute Ceiling (ft) 20,000
Service Ceiling (ft) 18,600
Single Engine Absolute Ceiling (ft) 7,100
Single Engine Service Ceiling (ft) 5,800
Altitude Cruising Speeds (mph)
Top Speed (mph) 205
Cruising
Speed
(75%
power
at
sea
level)
(mph)
181
Cruising
Speed
(75%
power
at
8,000)
(mph)
194
Optimum
Cruising
Speed
(65%
power
at
12,000)
186
(mph)
700313
1

SECTION
|
TWIN
COMANCHE
“‘p’
SPECIFICATIONS (cont):
PERFORMANCE
Fuel
Consumption
(75%
power)
(gph)
(both
engines)
17.2
Fuel
Consumption
(65%
power)
(gph)
(both
engines)
,
15.2
Cruising
Range
(75%
power
at
8,000
ft)
(mi)
048
*
Cruising
Range
(65%
power
at
12,000
ft)
(mi)
1025
*
Cruising
Range
(45%
power
at
16,000
ft)
(mi)
1116
*
*
84
gal.
usable
fuel
Landing
Roll
(short
field,
flaps
down,
ft)
700
Landing
Over
50-ft
Barrier
(flaps
down,
ft)
2100
WEIGHTS
Gross
Weight
(lbs)
,
3600
Empty
Weight
(Standard)
(Ibs)
2207
*
USEFUL
LOAD
(Standard)
(1bs)
1393
*
*
These
weights
are
approximate.
710310

TWIN
COMANCHE
‘‘B”’
SECTION
I
SPECIFICATIONS (cont):
POWER PLANT
Engine - Lycoming 10-320-B
Rated Horsepower 160
Rated Speed (rpm) 2700
Bore (in.) 5.125
Stroke (in.) 3.875
Displacement (cubic in.) 319.8
Compression Ratio 8.5:1
Dry Weight (Ibs) 295
FUEL AND OIL
Fuel Capacity (U.S. gal) , 90
Unusable fuel (inboard tanks only) 6
Fuel, Aviation Grade (minimum octane) 91/96
0il Capacity (qts) (each engine) 8
BAGGAGE AREA
Maximum
Baggage
(lbs)
250
Baggage
Space
(cubic
ft)
20
Baggage
Door
Size
(in.)
19
x
21
700313 3

e
SECTION
|
TWIN
COMANCHE
“‘B’"
SPECIFICATIONS
(cont):
DIMENSIONS
Wing
Span
(ft)
36
Wing
Area
(sq
ft)
178
Length
(ft)
25,2
Height
(ft)
8.2
Wing
Loading
(lbs
per
sq
ft)
20.2
Power
Loading
(Ibs
per
hp)
11.3
Propeller
Diameter
(in.)
72
LANDING GEAR
Wheel
Base
(ft)
7.3
Wheel
Tread
(ft)
9.8
Tire
Pressure
(psi)
Nose
42
Main
42
Tire
Size
Nose
(six-ply
rating)
6.00
x 6
Main
(six-ply
tating)
6.00x
6
4
700313
e

SECTION |
TWIN
COMANCHE
“‘B”’
700313