SLIDING WINDOWS - DESCRIPTION AND OPERATION

** ON A/C NOT FOR ALL

1. General

A. Sliding Windows
The cockpit includes two sliding windows (left and right) installed between FR5 and FR8. The crew can use these sliding windows as emergency exits.

B. Sliding Window Panels
Each panel is installed in a frame. The frames permit the panels to move on the rails which are fixed to the aircraft structure.

** ON A/C NOT FOR ALL

2. Component Location

Sliding Window - Opening/Closing Mechanism

FIN	FUNCTIONAL DESIGNATION	ZONE	ATA REF
** ON A/C ALL
8DG1	WINDOW-SLIDING, L	211	56-12-11
8DG2	WINDOW-SLIDING, R	212	56-12-11

** ON A/C NOT FOR ALL

3. Description

A. General

Sliding Window - Panel Assembly

(1) Each sliding window includes:

(a) A panel which has an anti-icing and defogging system. This panel is installed in a frame.

(b) The opening/closing mechanism.

B. Composition of Panels

(1) The sliding window panels are made of several layers of different materials.

(2) A peripheral seal made of silicone elastomer ensures the sealing between the panel and the sliding frame.

C. Sliding Frame

(1) The panel is held in the sliding frame with fasteners.

(2) The lower section of the sliding frame is equipped with a rack. This rack holds the window in its different positions when it is open.

D. Anti-icing and Defogging System
The windows are equipped with an anti-icing and defogging system. This system includes a heating element and two sensors. One sensor is used to regulate the temperature. The other one is in standby.
The electrical connections are made by a connector installed on the panel.

E. Opening/Closing Mechanism

Sliding Window - Opening/Closing Mechanism

This mechanism includes an upper mechanism and a lower mechanism.

(1) The upper mechanism includes:

a forward upper bellcrank which is equipped with a roller
an aft upper bellcrank which is equipped with a hook and a roller.
The bellcranks pivot on the frame.
The rollers are installed on eccentrics which are used to adjust the flushness. The hook engages on a locking pin which is fixed to the aircraft structure.
a connecting rod between the upper bellcranks.

(2) The lower mechanism includes:

a forward lower bellcrank which is equipped with a hook and a bogie
an aft lower bellcrank which is equipped with a hook and a bogie.
The bellcranks pivot on the frame. The bogies are installed on eccentrics which are used to adjust the flushness.
The hooks engage on locking pins which are fixed to the aircraft structure.
a transversal guide roller installed on an eccentric located at the front of the window. This roller guides the transversal movement of the window.
a connecting rod between the two lower bellcranks
an operating lever equipped with an unlocking pushbutton
a spring attached between the aft bellcrank and the frame.

The upper and lower mechanisms are interconnected by a gimbal-joint connecting rod.

** ON A/C NOT FOR ALL

4. Operation

Sliding Window - Sliding Window Operation

A. Unlocking

the operating lever is unlocked by pushing the pushbutton on the lever
rotation of the lever towards the rear causes simultaneous rotation of the aft bellcranks through the connecting rods.
This disengages the hooks from the locking pins which are fixed to the structure.

B. Opening

when the window is unlocked, the transversal guide roller, located at the front, serves to disengage the window towards the inside of the aircraft.
the self-alignment of the bogies and the transversal guide roller in the longitudinal rail enable the window to move towards the rear
the rack holds the window in its fully or partially open position.

C. Closing

action on the operating lever with the window in the open position unlocks the window. This releases the rack.
pushing forward on the lever gradually closes the window
at the end of travel, the transversal guide roller brings the window against the aircraft structure.
The hooks engage on the locking pins.
The operating lever is locked and prevents unwanted opening of the window.

[Rev.10 from 2021] 2026.04.01 02:07:11 UTC