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SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Power
Plant
Vibration
Monitor
ENG VIB
MON DC BAT 1 C7
REV 56, Jan 31/03
Vol. 1 20--60--4
POWER PLANT
Vibration Monitoring
Flight Crew Operating Manual MASTER
CSP A--013
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 20--70--1
REV 56, Jan 31/03
POWER PLANT
Reverse Thrust
Flight Crew Operating Manual
CSP A--013
MASTER
1. THRUST REVERSER SYSTEM
The thrust reverser (TR) system is used to assist in stopping the aircraft during landing
rollout or during a rejected/aborted take-off.
The TR system is installed at the discharge end of the fan duct and provides reverse thrust
by redirecting fan bypass air in the forward direction through a series of blocker doors and
cascade vanes. The TR actuating system uses pneumatic pressure from the 14th--stage
bleed air system to deploy and stow the thrust reverser.
The TR system is armed using the thrust reverser LH and RH ARMED switches on the
THRUST REVERSER panel on the center console. The TR system is controlled using the
thrust reverser levers on the thrust lever quadrant.
Each thrust reverser lever is held down in the stow position by a lever lock which is released
by pressing on the release trigger under the reverser handle. Raising the thrust reverser
levers is only possible when the thrust levers are at IDLE. This action simultaneously locks
the forward thrust levers in the IDLE position.
The thrust reverser levers can initially be raised approximately 20_, where they contact a
solenoid stop. The solenoid stop prevents TR lever movement beyond deploy or reverse
idle positions until the reverser assemblies are fully deployed.
NOTE
An autoretarding thrust lever mechanism makes sure
that the thrust levers are at idle whenever the thrust
reverser assemblies are in transit. In flight, should a
thrust reverser inadvertently deploy, the autoretarding
mechanism will automatically retard the affected
engine thrust lever to IDLE to minimize asymmetric
thrust.
Once the TR is fully deployed, the TR levers control reverse thrust from idle to maximum
reverse power. Reverse operation shuts off the 14th--stage bleed air. Returning the TR
levers to idle (full down) opens the 14th--stage bleed air and stows the reversers. Once the
reversers are stowed, the thrust levers can be moved forward to increase engine thrust.
NOTE
Reverser deployment does not prevent the thrust
levers from being selected to shutoff.
Emergency stow switches are provided on the TR panel to drive the thrust reverser to the
stow position should the automatic stow system fail.
REV 56, Jan 31/03
Vol. 1 20--70--2
POWER PLANT
Reverse Thrust
Flight Crew Operating Manual MASTER
CSP A--013
WARNING
< For aircraft not incorporating SB 601R--27--012 Effectivity AC 7003, 7007
to 7030, 7033, 7035, 7038, 7078, 7081 to 7126>,
Inadvertent actuation of the thrust reverser triggers,
may result in thrust reverser lock at idle. If this occurs,
stow the thrust reverser levers in the full forward
position.
The 14th--stage bleed air does not supply sufficient air pressure to operate the anti--ice
system and the TR system at the same time. Therefore, the anti--icing system is
automatically disabled upon thrust reverser deployment and remains disabled until the TR
has been stowed for 5 seconds.
CAUTION
Wing overheat (WING OVHT) may occur if only one
thrust reverser is deployed with both engines
operating and the wing anti--ice selected on.
Vol. 1 20--70--3
REV 56, Jan 31/03
POWER PLANT
Reverse Thrust
Flight Crew Operating Manual
CSP A--013
MASTER
Thrust Reverser Operation
Figure 20---70---1
Normal Operation
With Reverser Deployed
CORE
AIR FLOW
THRUST REVERSER
ARM SWITCH
EMER STOW
Switch Light
Used to stow thrust
reverser during an
emergency.
REV 56, Jan 31/03
Vol. 1 20--70--4
POWER PLANT
Reverse Thrust
Flight Crew Operating Manual MASTER
CSP A--013
Thrust Reverser
Figure 20---70---2
THURST
REVERSER
KNOBS (white)
RIGHT ENGINE
THRUST REVERSER
LEVER
LEFT ENGINE
THRUST REVERSER
LEVER
RELEASE
TRIGGER
GUARDS
NOTE
When reverse thrust has
been selected, forward
thrust is locked out.
Thrust Reverser (TR)
Levers
With thrust levers at
IDLE, pulling on TR
levers deploys thrust
reversers if the following
conditions are met:
 
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