BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 380

A red NOSE DOOR OPEN light located below
the LDG GEAR control panel illuminates if the
nose gear forward doors are not locked closed.
Pressing the landing gear TEST switch checks
the continuity of the landing gear handle lights,
the position indicator lights, and the red NOSE
DOOR OPEN light. The cabin ordinance lights
will also illuminate, provided individual
switches are in the AUTO position.
Main Landing Gear Bay
Overheat Detection
Main landing gear bay (wheel well) overheat,
possibly caused by an overheated brake, is in-
dicated by illumination of a red warning light
above the landing gear control panel. (Refer
to Chapter 8, "Fire Protection.")
Aural Warning System
A warning horn sounds through cockpit speak-
ers and/or through the crew headsets if one or
both thrust levers are brought to the IDLE po-
sition, and all three landing gear are not down
and locked. The horn can be muted by de-
pressing the MUTE HORN button on the LDG
GEAR control panel (Figure 14-9). The but-
ton illuminates (amber) to indicate the muted
condition. It will remain illuminated until
both thrust levers are advanced beyond the
IDLE position or until all three landing gear
are down and locked.
The horn also sounds when flaps are lowered
more than 30° and all three gear are not down
and locked. Under these conditions, the horn
cannot be muted.
OPERATION
Normal Retraction
Moving the landing gear handle to the UP po-
sition energizes a selector valve to direct No.
3 hydraulic system pressure for landing gear
retraction. The retract sequence of events is as
follows:
CL-600-2B16 PILOT TRAINING MANUAL
Normal Extension
Moving the landing gear handle to the DN po-
sition reverses the selector valve and the fol-
lowing extension sequence occurs:
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
• The red landing gear handle lights flash.
• The forward nose landing gear doors
hydraulically open, and the red NOSE
DOOR OPEN light illuminates.
• All three landing gear downlocks dis-
engage.
• The green NOSE, LEFT, and RIGHT
position indicator lights extinguish.
• The nose landing gear actuator folds the
drag brace and retracts the gear into the
nose landing gear bay, mechanically
closing the rear door.
• Pressure to the main landing gear brakes
stops wheel rotation.
• The nose landing gear uplocks me-
chanically engage.
• The main landing gear actuators retract
the main landing gear into the main land-
ing gear bays, mechanically closing the
partially faired doors.
• The main landing gear mechanical up-
locks engage.
• The forward nose landing gear doors
hydraulically close, and the red NOSE
DOOR OPEN light extinguishes.
• The selector valve deenergizes. The land-
ing gear is held retracted by the uplocks.
• The red landing gear handle lights cease
to flash.
• The red landing gear handle lights flash.
• A l l t h r e e l a n d i n g g e a r u p l o c k s
hydraulically disengage.
Lt é e
Lt d .
CL 601-3A/R 14-7