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PSP 604−6
THRUST REVERSER SYSTEM (CONT'D)
Thrust Reverser Operation
Figure 19−10−13
POWER PLANT
Description
Vol. 2 19−10−21
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
THRUST REVERSER SYSTEM (CONT'D)
GND SPOILERS/THRUST REVERSER Panel
Figure 19−10−14
The thrust reverse system incorporates the following safety features:
• In-flight protection – The reversers are locked out in flight. WOW (weight-on-wheels)
signals from the Proximity Sensing Electronics Unit (PSEU) or wheel spin-up (from the
anti-skid control unit) must be sensed in order to energize the thrust reverser deploy
relays.
• Flexshaft lockpin and lock cam – The reverse thrust PDU flexshaft is equipped with a
lock pin and lock cam, as well as a brake, which act to prevent uncommanded travel of
the reverser by more than 1/4 of an inch from the fully stowed position.
• Auto stow – In the event of flexshaft lock cam failure resulting in uncommanded
movement of the thrust reverser away from the fully stowed position, the stow solenoid
will energize, and provided 14th-stage bleed air is available, the thrust reverser will be
returned to the fully stowed position
• Automatic thrust lever retard system – An auto-retarding thrust lever mechanism
ensures that the thrust lever is at idle whenever the thrust reverser is in transit. In flight,
should a thrust reverser inadvertently deploy, the affected thrust lever is automatically
retarded to IDLE and locked to minimize asymmetric thrust.
• Emergency Stow – A thrust reverse emergency stow system is installed to stow an
unlocked thrust reverser. Selecting the respective UNLK switch/light on the THRUST
REVERSER panel directs 14th-stage bleed air to the PDU to stow the unlocked
reverser.
NOTE
While the UNLK switch/light is selected, 14th-stage bleed air is
continuously applied to the PDU, even if the reverser returns to the
stowed position.
POWER PLANT
Description
Vol. 2 19−10−22
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS
The CF 34-3B engine controls consist of the following:
• Thrust levers
• Thrust reversers
• Engine start/Ignition panel
• Engine control panel
The EICAS primary and secondary pages provide analog and digital engine information, and system
warning/caution and advisory messages.
Engine Starting
Engine Start/Ignition Panel
Figure 19−10−15
POWER PLANT
Description
Vol. 2 19−10−23
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
Engine Speed Controls
ENGINE CONTROL Panel
Figure 19−10−16
POWER PLANT
Description
Vol. 2 19−10−24
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
Thrust Levers
Thrust Levers
Figure 19−10−17
POWER PLANT
Description
Vol. 2 19−10−25
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
Reverse Thrust
GND SPOILERS/THRUST REVERSER Panel
Figure 19−10−18
POWER PLANT
Description
Vol. 2 19−10−26
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
Oil System
Impending Bypass and Chip Detector Annunciators (JB−5)
Figure 19−10−19
POWER PLANT
Description
Vol. 2 19−10−27
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
EICAS Primary Page
N1 Indications
Figure 19−10−20
POWER PLANT
Description
Vol. 2 19−10−28
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
ITT Indications
Figure 19−10−21
POWER PLANT
Description
Vol. 2 19−10−29
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
N2 Indications
Figure 19−10−22
POWER PLANT
Description
Vol. 2 19−10−30
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
CONTROLS AND INDICATORS (CONT'D)
Engine Secondary Indications
Figure 19−10−23
POWER PLANT
　
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