FLIGHT CONTROLS
May 06/2005
Flight Crew Operating Manual
Volume 2
REV 2
CSP 100-6
10-02-09
SECONDARY FLIGHT CONTROLS (Cont)
COMPONENTS AND OPERATION
SPOILER ELECTRONIC CONTROL UNIT (SECU)
Two electronic units, SECU 1 and SECU 2, control the spoilers. The SECUs contain all the functions necessary to transmit
the spoiler sensor outputs and control the spoiler actuators. The SECUs also supply crew-alerting system messages, main-
tenance messages, and flight-data recorder data.
FLIGHT SPOILERS LEVER
The flight spoilers lever provides symmetric deployment of two pairs of multifunction spoilers via the SECU. In normal
operation there are nine detented positions between 0 and MAX. The 0 position is gated and requires pressing the push
button on top of the lever to release. The 0 position can be reselected without pushing the button. A tenth position for emer-
gency descent is also available. The EMER position is gated and requires pressing the push button to engage. The lever
will return anywhere within the 0 to MAX position from EMER without pressing the button.
The spoiler graphic display on the top half of the left MFD declutters after 60 seconds when the spoilers are retracted. The
graphic will automatically be displayed again when the ground or flight spoilers are extended or a spoiler failure exists.
0
FLIGHT
SPOILERS
R
E
T
R
A
C
T
PITCH DISC
PULL & TURN
C
F
O
100
50
02_
00
2
M
A
X
EMER
REV 2
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