are activated
Prior to the first flight of the day, a complete check of the automatic ground
spoiler system is usually conducted using the test switch and other controls
to verify the operation of the system activation logic. See the Before
Takeoff: 03-04-00 section of this manual for a complete description of the
entire test.
3. Controls and Indications:
(See Figure 21 and Figure 22.)
NOTE:
Since the spoiler panels on the upper wing surfaces
are not visible from the cockpit inflight, the position of
the spoilers is monitored using the Flight Controls 2/3
synoptic page. A full description of the Flight Controls
2/3 synoptic page appears in section 2B-07-00.
A. Circuit Breakers (CBs):
The following CBs protect the spoiler system:
Circuit Breaker Name: CB Panel: Location: Power Source:
SPDBRK ALARM REER A-26 Right Essential DC Bus
SPLR FLT PWR S/O CPOP E-3 Right Essential DC Bus
GND SPLR CPOP E-2 Right Essential DC Bus
LEFT WOW POP C-1 Left Essential DC Bus
RIGHT WOW CPOP C-1 Right Essential DC Bus
WHEEL SPEED POP C-3 Left Essential DC Bus
THROT QUAD CPOP C-2 Right Main DC Bus
B. Crew Alerting System (CAS) Messages:
The following CAS messages indicate the status of the speed brake /
ground spoiler system:
Area Monitored: CAS Message: Message Color:
MAUs #1 and #2, Speed Brake
handle, spoiler panel RVDTs /
stowed contact switches
Aircraft Configuration Red
MAUs #1 and #2, ground spoiler
arming logic circuit, stowed
contact switches
Ground Spoiler Red
Spoiler Control pushbutton,
spoiler control valves
Spoilers Hydraulic Off Amber
MAU #2, Speed Brake handle
switch and power lever position
Speed Brake Extended Amber
Left main landing gear downlock,
GND SPLR ARMED pushbutton
Ground Spoiler Unarm Blue
MAUs #1 and #2, pressure
reducing module
Single Speed Brake Blue
Speed Brake handle switch Speed Brake Extended Blue
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS2A-27-00
Page 76
August 14/03
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