Emergency exit hatch for exiting a cabin module in an emergency and entering the same

1. An aircraft comprising:

a passenger cabin;

a cockpit; and

a crew rest compartment comprising an emergency exit hatch arranged in a floor of the crew rest compartment and configured for allowing an exit from the crew rest compartment through the floor thereof and into the passenger cabin or the cockpit and for allowing an entry into the crew rest compartment from the passenger cabin or the cockpit,

wherein the emergency exit hatch comprises:

a first mechanism for allowing visual inspection of an area underneath the emergency exit hatch by at least partially opening the emergency exit hatch with the aid of the first mechanism; and

a second mechanism for completely opening the emergency exit hatch;

wherein the first mechanism is not the same as the second mechanism, and

wherein the first mechanism is a mechanism selected from the group consisting of sliding mechanisms, sliding mechanisms with a rigid sliding unit, sliding mechanisms with a plurality of movable sliding units, sliding mechanisms with lamellae and sliding mechanisms with an individual rotatable blade.

2. The emergency exit hatch of claim 1 ,

wherein the first and the second mechanisms are actuable from inside the module; and

wherein the first and the second mechanisms are actuable from outside the module.

3. The emergency exit hatch of claim 1 ,

wherein the first mechanism allows visual inspection into the accommodation module from a lower-lying area.

4. The emergency exit hatch of claim 1 ,

wherein the second mechanism is a hinge mechanism.

5. The emergency exit hatch of claim 1 ,

wherein the second mechanism is actuable regardless of a state of the first mechanism.

6. The emergency exit hatch of claim 1 , further comprising:

an access clearance device configured for providing a controlled access to the accommodation module, and for providing a controlled exit from the accommodation module.

7. The emergency exit hatch of claim 6 ,

wherein the access clearance device is selected from the group consisting of electronic keypad, mechanical keypad and electromechanical keypad.

8. The emergency exit hatch of claim 1 , further comprising an element selected from the group consisting of steps, fold-out steps, seat backrests, seating surface, footboard, handle and handrail.

9. The emergency exit hatch of claim 1 ,

wherein the emergency exit hatch is configured for being arranged between a ceiling of a passenger area and a crown area.

10. A method for actuating an emergency exit hatch for exiting an accommodation module of an aircraft in an emergency and for entering the accommodation module, the exit hatch arranged in a floor of the accommodation module and configured for allowing an exit from the accommodation module through the floor thereof and into the passenger cabin or the cockpit and for allowing an entry into the accommodation module from the passenger cabin or the cockpit, the exit hatch comprising a first and a second mechanism, the method comprising:

actuating the first mechanism;

inspecting whether it is possible to actuate the second mechanism;

actuating the second mechanism to substantially completely open the emergency exit hatch;

wherein the first mechanism is not the same as the second mechanism, and

wherein the first mechanism is a mechanism selected from the group consisting of sliding mechanisms, sliding mechanisms with a rigid sliding unit, sliding mechanisms with several movable sliding units, sliding mechanisms with lamellae and sliding mechanisms with an individual rotatable blade.

11. The method of claim 10 , further comprising:

lifting a handle on the exit hatch and disengaging a locking device of the exit hatch; and

engaging the locking device.

12. The method of claim 11 , further comprising:

removing a decorative panel arranged adjacent to the exit hatch along a ceiling or a ceiling line of the aircraft, thereby allowing an exit from or an entry into the accommodation module.

13. The method of claim 11 , further comprising:

utilizing an exiting or entering aid associated with the exit hatch, the exiting or entering aid selected from the group consisting of steps, fold-out steps, seat backrests, seating surfaces, footboards, handles and handrails.

14. The method of claim 11 , further comprising:

actuating an access clearance device associated with the exit hatch, the access clearance device configured for providing a controlled access to the accommodation module, and

for providing a controlled exit from the accommodation module.

15. An accommodation module with an emergency exit hatch for an aircraft, the emergency exit hatch comprising:

a first mechanism for allowing visual inspection of an area underneath the emergency exit hatch by at least partially opening the emergency exit hatch with the aid of the first mechanism;

a second mechanism for substantially completely opening the emergency exit hatch;

wherein the first mechanism is not the same as the second mechanism; and

wherein the first mechanism is a mechanism selected from the group consisting of sliding mechanisms, sliding mechanisms with a rigid sliding unit, sliding mechanisms with several movable sliding units, sliding mechanisms with lamellae and sliding mechanisms with an individual rotatable blade; and

wherein the exit hatch is arranged in a floor of the accommodation module and is configured for allowing an exit from the accommodation module through the floor thereof and into a passenger cabin or a cockpit of the aircraft and for allowing an entry into the accommodation module from the passenger cabin or the cockpit.