Podcast
Questions and Answers
What is the purpose of the External Door Control switch?
What is the purpose of the External Door Control switch?
To open and close the MED when securing the aircraft.
What powers the essential bus and the AUX pump when the momentary switch is selected to the CLOSE position?
What powers the essential bus and the AUX pump when the momentary switch is selected to the CLOSE position?
The aircraft batteries.
Where is the Emergency Entry Switch located?
Where is the Emergency Entry Switch located?
At the bottom of the exterior of the MED.
How is the status of the doors indicated to the flight crew?
How is the status of the doors indicated to the flight crew?
What are the different sections into which aircraft doors are divided?
What are the different sections into which aircraft doors are divided?
What system is used as the power source for the Backup System of the MED in the event of a minor crash condition?
What system is used as the power source for the Backup System of the MED in the event of a minor crash condition?
What prevents the MED from opening inflight?
What prevents the MED from opening inflight?
How many switches are capable of commanding the MED? What is the capability of control for each switch?
How many switches are capable of commanding the MED? What is the capability of control for each switch?
What does the DOOR SAFETY pushbutton on the Cockpit Overhead Panel do?
What does the DOOR SAFETY pushbutton on the Cockpit Overhead Panel do?
What must the secondary locking mechanism do in order for the latch mechanism to operate?
What must the secondary locking mechanism do in order for the latch mechanism to operate?
How is the visual locked indication identified on the locked indication flag?
How is the visual locked indication identified on the locked indication flag?
What prevents cabin pressurization until the MED is fully closed, latched, and locked?
What prevents cabin pressurization until the MED is fully closed, latched, and locked?
What is the purpose of the passively-inflated bulb type seals around the door's perimeter?
What is the purpose of the passively-inflated bulb type seals around the door's perimeter?
What is the function of the MED hydraulic system?
What is the function of the MED hydraulic system?
What happens when a MED switch is selected to the CLOSED position?
What happens when a MED switch is selected to the CLOSED position?
In the event of electrical failure, how can the MED be retracted with the hydraulic system operating?
In the event of electrical failure, how can the MED be retracted with the hydraulic system operating?
What is the requirement for the main entry acoustic door during taxi, takeoff, and landing operations?
What is the requirement for the main entry acoustic door during taxi, takeoff, and landing operations?
How is the MED OPERATOR'S INDICATION DOOR OPEN illuminated when the MED is not fully closed?
How is the MED OPERATOR'S INDICATION DOOR OPEN illuminated when the MED is not fully closed?
What type of power is used to open the MED on the first flight of the day, as per the Airplane Flight Manual?
What type of power is used to open the MED on the first flight of the day, as per the Airplane Flight Manual?
What is the MED considered as in abnormal landing cases except for a water landing?
What is the MED considered as in abnormal landing cases except for a water landing?
How many over-wing EEDs are installed on the aircraft?
How many over-wing EEDs are installed on the aircraft?
What system supports the main entrance door and the over-wing EEDs?
What system supports the main entrance door and the over-wing EEDs?
Where are the operating instructions located for the main entrance door and the over-wing EEDs?
Where are the operating instructions located for the main entrance door and the over-wing EEDs?
The MED is considered as a normal landing case except for a water landing.
The MED is considered as a normal landing case except for a water landing.
The External Door Control switch can be used to open and close the Main Entrance Door (MED) when securing the aircraft.
The External Door Control switch can be used to open and close the Main Entrance Door (MED) when securing the aircraft.
The latching mechanism is operated by an electro-mechanical actuator powered from the Right Essential DC bus.
The latching mechanism is operated by an electro-mechanical actuator powered from the Right Essential DC bus.
The Vestibule Switch is capable of commanding both opening and closing of the MED.
The Vestibule Switch is capable of commanding both opening and closing of the MED.
The MED Operator's Indication Light illuminates amber when the MED is fully closed, latched, and locked.
The MED Operator's Indication Light illuminates amber when the MED is fully closed, latched, and locked.
The damper cylinder is used to control the opening of the Main Entry Door (MED) as it extends.
The damper cylinder is used to control the opening of the Main Entry Door (MED) as it extends.
The auxiliary hydraulic pump supplies 3000 psi to the main entry door hydraulic system.
The auxiliary hydraulic pump supplies 3000 psi to the main entry door hydraulic system.
The selector valve manual override knob cannot be rotated to retract the MED in the event of electrical failure.
The selector valve manual override knob cannot be rotated to retract the MED in the event of electrical failure.
The MAU Monitor and Warning System (MWS) communicates the position information of open doors to generate appropriate CAS messages.
The MAU Monitor and Warning System (MWS) communicates the position information of open doors to generate appropriate CAS messages.
The main entry acoustic door must be manually opened and stowed during taxi, takeoff, and landing operations.
The main entry acoustic door must be manually opened and stowed during taxi, takeoff, and landing operations.
The MED is considered abnormal in water landing cases.
The MED is considered abnormal in water landing cases.
The secondary locking mechanism secures the primary locking mechanism only in the latched position.
The secondary locking mechanism secures the primary locking mechanism only in the latched position.
The visual locked indication is via a single orange dot on the unlocked indication flag.
The visual locked indication is via a single orange dot on the unlocked indication flag.
The MED may be operated by the MED operation switches only during normal door operation.
The MED may be operated by the MED operation switches only during normal door operation.
The door incorporates two actively-inflated bulb type seals around its perimeter to maintain cabin pressure.
The door incorporates two actively-inflated bulb type seals around its perimeter to maintain cabin pressure.
The MED hydraulic system is used to open the door using a closed-circuit damper cylinder that generates a controlled free-fall.
The MED hydraulic system is used to open the door using a closed-circuit damper cylinder that generates a controlled free-fall.
In the event of electrical failure, the MED can be retracted with the hydraulic system operating without any manual intervention.
In the event of electrical failure, the MED can be retracted with the hydraulic system operating without any manual intervention.
The MED OPERATOR'S INDICATION light illuminates amber when the MED is fully closed.
The MED OPERATOR'S INDICATION light illuminates amber when the MED is fully closed.
The DOOR OPEN legend remains illuminated until the door is closed and locked after being selected to the OPEN position.
The DOOR OPEN legend remains illuminated until the door is closed and locked after being selected to the OPEN position.
The EXTERNAL BATTERY switch must be selected to ON if external power is not applied to the aircraft for opening or closing the main door from outside the aircraft.
The EXTERNAL BATTERY switch must be selected to ON if external power is not applied to the aircraft for opening or closing the main door from outside the aircraft.
The main entrance door and the four removable cabin EEDs are the primary and most immediate path for exiting the aircraft in case of abnormal operations.
The main entrance door and the four removable cabin EEDs are the primary and most immediate path for exiting the aircraft in case of abnormal operations.
