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overwing emergency exit, one baggage compartment door, one rear fuselage equipment bay door
and several service doors and panels.
The door warning system provides the flight crew with a visual indication (EICAS), when any of the
following exterior doors/exits are opened or incorrectly latched:
• Passenger door.
• Cargo door.
• Aft equipment bay door.
• Left or right emergency exit.
Description and operation of the emergency features of the wing emergency exits are in this manual
Chapter 8, EMERGENCY EQUIPMENT.
The door warning system also provides the flight crew with a visual indication (EICAS), when any of
the landing gear doors are not in their commanded position. Description and operation of the landing
gear doors are in this manual Chapter 15, LANDING GEAR.
PASSENGER DOOR
The passenger door is the main entrance /exit for passengers as well as the flight crew and is
located on the left side of the airplane, aft of the flight compartment. The door is a mechanically
balanced airstair with an attached door. The door assembly which opens outwards and downwards,
turns on two brackets attached to each side of the airstairs and hinge points in the fuselage.
Handrails are attached to each side of the airstairs and the fuselage. They extend and retract as the
door opens and closes.
The door operation is power assisted with a cable system and a DC electric motor. The door locking
mechanism is capable of operations from inside and outside the airplane. A single operation from
either handle will unlock the door and lift it clear of its latching mechanism.
The door opens under a controlled descent through a tension spring arrangement and mechanical
damping using a pulley and cable mechanism.
The door is normally closed from inside or outside of the airplane through an electrical actuator. The
door can also be manually closed without electrical power.
A hinged flap (vent flap) opens in the exterior surface of the door to protect against pressurization of
the fuselage, to an unsafe level, until the door is closed and locked.
The door locks have proximity switches to display an EICAS indication of closed and locked.
Lights are provided in each step riser to illuminate the steps. Door lighting automatically shuts-off
when the passenger door closes.
AIRPLANE GENERAL
Rev 12, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
01−10−47
PASSENGER DOOR SCHEMATIC
CABLE
ASSEMBLY
HANDRAIL
ASSEMBLY
CLOSED POSITION
GF0110_030a
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PASSENGER DOOR COMPONENTS
The following components are described to provide an understanding of the passenger door
operating system.
Airstair and Handrails Assembly
The airstairs act as the steps for embarking/disembarking the airplane. They also act as support
for the door structure, which hangs below the airstairs when open. The airstairs are hinged to the
airplane via two hinges and two pins.
The handrails are attached to the fuselage and the airstairs. They support the weight of the door
and airstair assembly and passenger loading. Handrails are capable of supporting the weight of
the door and passenger loading.
The design of the door is such that there is no contact with the ground when the door is in the
open position.
AIRPLANE GENERAL
Flight Crew Operating Manual Rev 12, Aug 14, 2006
CSP 700−5000−6
Volume 2
01−10−48
PASSENGER DOOR COMPONENTS (CONT'D)
Lift arms
Two levers are connected from either end of the lockshaft to the fixed linked arms on the airstair
structure. They are driven by the handles, assisted by the tension spring. Their purpose is to lift
the door out of its frame and hold it up and out in relation to the airstair, while the door is opening.
“G” Locks
In the locked position, the “G” lock hooks hold the door relative to the airstairs and prevent any
upward movement in the door frame during turbulence or negative “G” flight.
Vent Flap
A pressurization vent flap is centrally located at the top of the door under the lockshaft. The flap
prevents pressure building up until the “G” locks engage. Once the locks are in and the flap is
shut, the pressure holds the flap firmly shut. The vent flap is opened by the lockshaft mechanism
as the “G” locks are disengaged, to release any residual pressure from the pressurization system.
LIFT ARM
VENT
FLAP
FORWARD
"G" LOCK
AFT "G"
LOCKING
HANDLE
GF0110_031a
LOCK
OP
EN
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