SECTION
V
PERFORMANCE
MOONEY
MODEL
M20J
An appropriate adjustment to the range data shown for the cowl flaps closed
condition can be made based on the flight time planned with the cowl flaps
partially open. For example, using the above speed decrement for the cowl
flaps
112
open for a
5
hour flight will result in the following decrease in range:
5
hr. x
4
Kts.
=
,
. . .
,
20
N.M.
reduction in range
MAIN GEAR LOWER DOOR REMOVAL
If numerous takeoffs and landings are to be conducted on soft fields or in tall
grass. or if ice and snow are likely to be present on runway and taxiway sur-
faces for extended periods, it may be advantageous to remove the lower
doors(extended position) installed on each main landing gear. These doors
can be damaged during operations in soft field conditions, or a heavy ac-
cumulation of packed snow or ice inside the doors could prevent proper land-
ing gear operation.
If these small gear doors are removed, a decrease in cruise speed and range
can be expected and should be considered in preflight planning. To be con-
servative, the following figures should be used:
A. Decrease true airspeed at cruise by approximately
5
Kts
B.
Decrease range by as much as
50
N,M.(92 Km) for 64.0 gallon(243 liters)
fuel capacity.
REV.
B
6-12-87
ISSUED 6-2-86
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