Comm

Question 1

(All) Describe the cockpit indications of an incoming cabin or ground call:

Answer 1

• Ground: When PILOTS CALL button (External Electrical Power Receptacle Panel) is pushed, chime sounds in cockpit.
*** Chime only

• Cabin: ATTND CALLING / RESET switchlight illuminates simultaneously with chime when flight attendant pushes handset PLT switchlight. Switchlight resets when pushed.
*** Chime plus light

Question 2

(All) How is oxygen mask microphone activated/deactivated?

Answer 2

• To activate oxygen mask mic, position MASK/BOOM switch on Audio Control Panel in MASKS position.
• To deactivate, position MASK/BOOM switch on Audio Control Panel in the BOOM position.

Question 3

(All) Recall which microphones can be used for Interphone/PA communications to cabin:

Answer 3

• Mask or Boom mic
• Hand mic
• Handset

Question 4

(88, 90) Locations of the three audio panels in the flight deck:

Answer 4

• An audio selector panel is installed at Captain’s, First Officer’s, and aft overhead panels.

Question 5

(88, 90) Location and purpose of Maintenance Interphone switch:

Answer 5

• Maintenance Interphone switch is located on aft overhead panel.
• Positioning switch to ON connects all maintenance interphone jacks to service interphone.