Specifications

SECTION IV
OPERATING INFORMATION
MODEL 560
ALCOHOL
An alcohol reservoir is located next to the brake reservoir behind the right baggage compartment aft
liner. The liner must be removed for servicing. The filler plug on the reservoir should be removed and
alcohol added to bring the fluid level up to the neck of the filler plug. Filling to above the sight gage
provides a reserve supply of alcohol to perform preflight or operational checks without replenishing the
reservoir.
FIRE BOTTLES
Underserviced fire bottles must be exchanged by authorized maintenance facilities.
GEAR AND BRAKE PNEUMATIC SYSTEM
The emergency gear and brake bottle should be serviced when the pressure gage reads below 1800
PSI. Maintenance personnel should perform the servicing with high pressure nitrogen and refill the bottle to
2050 PSI. Servicing is accomplished through a charging valve on the bottle which is located behind the
right baggage compartment aft line reservoir.
TIRES
Main Gear Tire Pressure:
1. Main gear tire pressure shall be kept at 152 PSIG, +5 or -5 PSIG (1048 kPa +34.5 or -34.5
kPa), unloaded, with an ambient temperature of 21.11° C (70°F).
2. Main gear tire pressure shall be kept at 158 PSIG, +5 or -5 PSIG (1048 kPa +34.5 or -34.5
kPa), loaded, with an ambient temperature of 21.11° C (70°F).
(Nose Gear Tire Pressure:
1. Nose gear tire pressure shall be kept at 120 PSIG, +5 or -5 PSIG (827 kPa, +34.5 or -34.5
kPa), unloaded, with an ambient temperature of 21.11° C (70°F).
2. Nose gear tire pressure shall be kept at 125 PSIG, +5 or -5 PSIG (862 kPa, +34.5 or -34.5
kPa), loaded, with an ambient temperature of 21.11° C (70°F).
Adjust tire pressures for climate change. Climate changes will have an effect on tire pressure when flying
from a hot climate to a cool climate and vice versa. When the temperature change is extreme, such as
changes in excess of 10°C, (50°F) for example, a tire inflated in a warm climate will drop in air pressure,
when the airplane on which it is installed is flown to a cold climate. An airplane moved out of a heated
hangar into the cold winter will do the same.
In either circumstance, tires should be overinflated to compensate for the subsequent cooling and loss of
pressure caused by extreme temperature changes. As a general rule, an ambient temperature change of
-15° C (5° F) produces a pressure change of about one percent.
TOILET
The flush toilet reservoir requires servicing when the liquid level becomes too low or when liquid
appears to have incorrect chemical balance. To properly service the reservoir it must be removed from the
toilet by disconnecting it and pulling it through the door in the front of the cabinet. Instructions for removing
and servicing the reservoir are found in Chapter 12 of the Airplane Maintenance Manual. Servicing the
reservoir requires the addition of the proper mixture of water and chemical (1.5 ounces of chemical per
quart of water) to the reservoir. It will take approximately 2 quarts of liquid if the reservoir is empty. If
outside temperatures are below freezing and the airplane is kept in an unheated hangar, add antifreeze to
the reservoir.
I 4-34 Configuration AA 56OMB-01