SUPPLEMENTARY
PROCEDURES
ENVIRONMENTAL
AIRPLANE
O
PERATIONS
MANUAL
1-02-79
Page
4
Code
01
REVISION 41
Copyright © by Embraer. Refer to cover page for details.
CONTINUED FROM PREVIOUS PAGE
In very cold days, Embraer recommends a gradual warming of the
cabin, as follows:
- Set air conditioning control to manual mode;
- Put the cockpit temperature selection knob in the 9 o’clock
position;
- Wait approximately 3 minutes;
- Change control to automatic mode;
- Wait another 2 minutes before controlling temperature as
required.
CAUTION: • MANTAIN CABIN AT THE FIELD ELEVATION. DO NOT
PRESSURIZE THE AIRPLANE.
• WITH PACKS OPERATING AND DOORS CLOSED, DO
NOT LEAVE THE AIRPLANE UNATTENDED.
Main Panel ....................................................................CHECK
Check proper operation of all instruments and systems. Liquid
Cristal Display may not be readable at temperature below -20°C.
Electric Hydraulic Pumps..............................................ON
Check hydraulic pressure. If pressure does not rise to normal
values, warm up the hydraulic reservoir compartment with hot air
and keep the electric hydraulic pumps running for 15 minutes.
Do not allow the hot air from the ground cart to exceed 100°C
(212°F), as it may damage the components inside the
compartment.
Flight Controls...............................................................CHECK
Check control wheel, control column and rudder pedals for freedom
of movement and full travel. Control forces can be increased at low
temperatures.
Operate all trim systems, including back up pitch trim system,
checking for freedom of movement and full travel. If any flight
control is suspected of restricted movement or jamming, report to
maintenance personnel.
Flaps .............................................................................CHECK
Extend and retract the flaps. Make sure the flaps are free from
snow or ice before moving them. Leave flaps UP if application of
anti-icing/deicing fluids is expected.
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