Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-54
26-Jul-2017
SPOILERS
To speedup descends, assist in turns and prevent bouncing during landing / touchdown the CRJ is equipped
with spoilers. As already indicated they may be used for different purposes. Accordingly, the spoilers itself are
divided into multifunctional (2 per wing) and ground spoilers (2 per wing)
To extend the spoilers to speed up a descent or to bleed off speed simply pull the spoiler lever back as
required. The multifunctional spoilers will deploy according the setting of the spoiler lever.
Assistance during steep turns is performed automatically by the multifunction spoilers as well.
If the GND LIFT DUMPING switch is not moved to the MAN DISARM position all spoilers will extend as soon as
the aircraft sensed a touchdown or an aborted take-off.
Spoiler positions is shown on the Flight Control
display. The outer two indicated multi-functions
spoilers, the inner two ground spoilers (only deply
on ground).
1. GND LIFT DUMPING: Three-position
switch to select ground lift dumping
mode that prevents the aircraft from
bouncing back into the air on landing:
a. AUTO: Spoiler armed to deploy
on touchdown.
b. MAN ARM: Manually arm
spoilers for deployement
(backup mode for AUTO)
c. MAN DISARM: Disable
automatic deployment.
2. Flight Spoiler Control Lever