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engine, the information illustrated in Figure 4 must be used to consider the
safety of persons, equipment and buildings in the vicinity of the aircraft.
8. AIRCRAFT PARKING AND MOORING (Figures 5 and 6)
When the aircraft is stationary on the ground, precautions must be taken to
ensure safety of personnel and equipment. The extent of safety measures to be
observed depends upon the prevailing or expected weather conditions and the
expected length of time the aircraft will be stationary. For complete safety
the aircraft should be parked in a hangar but if this is not possible, the
aircraft must be parked or moored into wind, with landing gear locking pins
installed, as illustrated in Figure 5.
To protect intakes and exhausts from foreign object ingestion and to protect
sensitive equipment from accidental damage, it is essential to install covers
and plugs as shown in Figure 6. Parking the aircraft also entails checking
that flight controls are in neutral, battery switches are off, parking brake is
on, doors are closed and that wheels are chocked.
9. SERVICING POINTS (Figure 7)
Location and details for all aircraft servicing points are shown in Figure 7.
10. AIRCRAFT ANTENNAS (Figure 8)
Location and nomenclature of the aircraft antennas are given in Figure 8.
11. DOORS
The aircraft is provided with a passenger/crew door, a baggage compartment
door, a rear equipment bay door, landing gear doors and various small doors
which provide access to servicing points. An overwing emergency exit door is
provided on the right side of the passenger compartment.
Various doors installed on the aircraft are lockable. These are the access
doors to the avionics bays, the baggage compartment door, the passenger/crew
door and the rear equipment bay door.
The baggage compartment and emergency exit doors are of the plug type which
open inward; all other doors open outward. All doors are flush with the
aircraft outer skin when closed.
The passenger/crew door is either upward opening, complete with a folding
airstair, or downward opening, with the stairs as an integral part of the door
structure.
SECTION 1
Page 4
Jun 12/86
canadair
challenger
OPERATING MANUAL
PSP 606
Passenger/Crew Upward Opening Door (Figures 9 and 11)
The door is electrically powered to open upward by means of a lift
mechanism connected to the door forward edge* The electric actuator is
located immediately forward of the lift mechanism. The internal switch is
located above the actuator, and the external switch is located under a
small service door immediately to the rear of the entrance door bottom rear
corner.
The door is secured in the closed position by a manually operated latch
mechanism. The latch mechanism is operated from the inside or outside by
an interconnecting internal/external handle.
The external handle stows flush into a pocket in the door outer skin and in
this position, it acts as a lock for the latching mechanism. The external
handle itself has a keylock which unlocks or locks a PUSH trigger. The
PUSH trigger, when pressed, ejects the external handle.
The internal handle, when rotated to the unlatched position, automatically
ejects the external handle also. An inner knob on the internal handle,
when pulled and then pushed, stows the external handle. Four latch cams,
which hold the door closed, can be checked for engagement when red index
markers are aligned at the latch cam locations.
In an emergency or if an electrical fault occurs, the door can be opened by
a self-energizing gas spring strut emergency system connected to the door
rear edge. When closed and latched, the door is automatically armed for
operation of the emergency opening system. When armed, the emergency
release system prevents electrical operation, so that when the door is
unlatched, a force of approximately 8 lb is required to initiate gas spring
operation. Since the door then opens suddenly, it is necessary to exercise
extreme care during gas spring operation. The emergency system is disarmed
internally by pulling a T-handle located on the upper forward half of the
door; the system is disarmed externally by pressing the external disarm
trigger located above the external handle.
Proximity switches and microswitches, located inside the door and inside
the fuselage, provide an indication, in the flight compartment, when the
door is unlatched or when the external handle and airstair are not stowed.
Airstair (Figure 9)
The airstair is a two-section, seven-step construction incorporating a hand
rail. The airstair is attached to two floor tracks which extend forward
from just inside the passenger/crew entrance door to the flight compartment
　
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