ATA 23 Communications Flashcards
How long time is recorded in the CVR?
30 min/ 2 hours
What conditions must exist before the CVR may be erased?
Park brake set
WoW
Press and Hold the ERASE switch for approx. 16 seconds
How is the CVR started and stopped?
The CVR provides continous recording of all flight crew communication, conversations in the flight compartment and PA announcements during the time the aircraft electrical system is powered.
Stopped when power are removed
What is the purpose of the ULD (Underwater Locating Device) that is mounted on both the FDR and CVR?
To emit a “ping” when the unit is immersed in water
What frequencies is the ELT transmitting on?
121,5
243
406,025 MHz (digital message sent to a satellite)
If the ELT inadvertently is transmitting, how is it stopped? (WF Standard)
By the ELT remote switch
The remote switch when moved from ARM to ON and rhen back to ARM again will stop the ELT transmission and reset the transmitter unit
How is the brightness of the Digital Display on the Control Box Controlled?
By a automatic display dimming sensor
How many frequencies may be stored in the Control Box?
6
When the radio transmitts, how is it indicated?
TX - Transmit Annunciator light is illuminated
Sidetone, du hører deg selv
The radio may transmitt 2 min. continously. What shall you do if more time is required?
Release the PTT momentarily and then push it again
What is the purpose of the HOT MIC Switch?
In the ON position the boom and mask are automatically and continously keyed (“hot”) for interphone mode only
If HOT MIC is ON, how does that affect the Cockpit Speakers?
Speaker audio is muted
What is the purpose of the AUX Connection at the Headphone Jacks Panel?
If either the pilot’s or copilot’s audio system fail, the affected crew member can monitor the audio integrating system on the opposite side by plugging his headset into the HEADPHONES - AUX jack on his jack panel
On the ground, which Crew Stations may be available at the Service Interphone System?
Pilot’s Control Station
Copilot’s Control Station
Observer’s Control Station
Ground Crew Interphone Stations (two stations)
When an external headset is connected on the ground, how is it indicated?
The GND CREW FWD or AFT advisory light (pilot’s side) comes on
Describe the procedures to make an announcement to the cabin using the PA system
- MIC selector to PA
- Select PA on the CABIN INTERPHONE panel
When the Flight Attendant uses the PA system, how is it indicated?
PA pushbutton illuminated (green)
The cabin speakers have two power levels. What controls the power level?
Oil press adjusts the power level
Does it matter if the matter if the MIC SELECTOR at the observers Audio Panel accidentally is left at Postion PA.
Yes, the PA light (green) will not extinguish
What means are available for the Flight Crew to get in contact with the flight attendant?
Cabin Interphone System
By pressing the CALL switchlight and selecting the MIC switch to PA on the audio control panel, the cockpit crew uses the hand-held, headset-boom or maks mike to communicate with the flight attendants
What are the indications in the cabin when CHIME is used?
An associated CALL switchlight is illuminated
What are the indications in the cabin when EMER at the Cabin Interphone Panel is used?
AMBER illumination of the EMER button on the Cabin Interphone Panel
Chime
Flashing pink
What indications are available at the cabin attendants advisory light panel?
EMER
P.A.
CALL
ATT
Legg til de som er i taket
What are the total number of static discharges on the aircraft?
- 100: 23 (5 on the left ving, 4 on the right)
- 300: 26
