ATA 23 MRO RNG 2026

1. The primary function of the Aircraft Identification Module (AIM) is to program the __________ message in the ELT. a. Military. b. Aircraft identification. c. Weather. d. Maintenance.

2. The ON-ARMED-TEST/RESET switch on the RCP can be set to the TEST/RESET position to initiate an ELT __________. a. Transmission. b. BITE test. c. Emergency announcement. d. Battery recharge.

3. The ELT operates automatically or manually, and its battery pack supplies power for approximately __________ hours. a. Twenty. b. Fifty. c. Ten. d. One hundred.

4. The Flight Interphone system is mainly used for __________ communication within the cockpit and with ground mechanics. a. Satellite. b. External. c. Passenger. d. Internal.

5. The ELT BITE test is performed to verify the proper operation of the ELT system and involves transmitting a(n) __________ signal. a. Emergency. b. Distress. c. Engine. d. Entertainment.

6. What is the purpose of the Cabin Assignment Module (CAM)?. a. Control passenger seating assignments. b. Manage interphone communications. c. Store cabin zone information. d. Operate oxygen mask systems.

7. How does the conference mode work for interphone communication?. a. It connects all cabin stations to the cockpit. b. It allows communication between two interphone sources. c. It activates priority messages in the cabin. d. It broadcasts chime sounds.

8. What is the priority of an emergency call in the communication system?. a. Priority 1. b. Priority 2. c. Priority 3. d. Priority 4.

9. What happens when an emergency call is initiated from the cockpit?. a. All cabin stations connect to the cockpit. b. The cockpit connects to all cabin stations. c. The cabin stations connect to each other. d. All PA loudspeakers are activated.

10.How does the cabin initiate interphone communication?. a. By using the Audio Control Panel (ACP). b. By selecting pushbuttons on the CALLS panel. c. By lifting the cockpit handset. d. By activating the oxygen masks.

11. What is the purpose of the RESET key in the cabin ATTND stations?. a. Resets the interphone function. b. Initiates an emergency call. c. Initiates a PA announcement. d. Resets the system power.

12. How are calls from the cockpit initiated using the CALLS panel?. a. By using the CABin key and knob. b. By using the ACP pushbuttons. c. By using the ATT key on the AIP. d. By using the PA ALL key.

13. The upper row of the AIP display is used for the indication of information concerning the cabin and flight crew interphone system. The outer left section is used to show the __________ information. a. handset. b. interphone. c. system. d. status.

14.To select an announcement using the handmic, the Passenger Address (PA) transmission key located on the Audio Control Panel (ACP) must be pressed and held. It comes on green and __________ the microphone audio to the PA system. a. connects. b. disconnects. c. transmits. d. blocks.

15. To make an announcement using the boomset or the oxygen mask, the PA transmission key must be pressed and held on the ACP. It comes on green. The handmic has also the __________ priority. a. same. b. higher. c. lower. d. equal.

16. A handset is mounted on the cockpit center pedestal and contains a PTT SW. Pressing on the PTT SW keys the PA system, __________ lower priority PA sources and broadcasting the speech over all PA loudspeakers and PAX headsets. a. overriding. b. avoiding. c. enhancing. d. silencing.

17. The conference mode is used for the communication between __________ interphone sources. a. two. b. more than two. c. all. d. specific.

18. How is speech communication established from the cockpit using the SVCE INT jacks?. a. Pressing the CABin key. b. Using the Audio Control Panel (ACP). c. Pressing the SVCE INT OVRD pushbutton. d. Using the Audio Management Unit (AMU).

19. What indication is displayed on Attendant Indication Panels (AIPs) when cabin stations initiate communication using the SVCE INT jacks?. a. "SERV INT". b. "CABIN CALL". c. "CABIN COMM". c. "CABIN COMM".

20. Which component digitizes audio signals from cabin stations and transmits them to the directors?. a. DEUs. b. AMU. c. LGCIUs. d. ACP.

21. What are the two sub-systems of the communications system?. a.Radio communication and on-board communication. b.Ground communication and air communication. c. Internal communication and external communication. d. Cockpit communication and cabin communication.

22. What is the purpose of communication during taxiing and towing on the Single Aisle aircraft?. a.To interact with the service personnel. b.To establish contact with the tower. c. To ensure proper passenger announcements. d.To communicate with maintenance personnel.

23. What must be done to enable transmission mode for the acoustic devices (microphone)?. a. Press the reception key. b. Push the ON/OFF switch. c. Select the related transmission key. d. Activate the standby frequency.

24. What is the purpose of the Service Interphone system in terms of maintenance coordination?. a. To facilitate communication between flight crewmembers. b. To connect to the tower for takeoff clearance. c. To enable communication between flight crew and mechanic. d. To communicate with passengers during boarding.

25. How are audio lines from various jacks routed to the Audio Management Unit (AMU)?. a. Through the Cabin Intercommunication System. b. Through the Audio Control Panel. c. Through the Radio Management Panel. d. Through the amplifiers in the CIDS Directors.

26. When is the automatic mode of the Service Interphone system active?. a. During flight operations. b. On the ground with the landing gear up. c. During engine start. d. On the ground with gear down and compressed.

27. How is the Service Interphone system re-enabled after jacking the aircraft?. a. Switching the ACP ON/OFF switch. b. Pushing the INT pushbutton. c. Adjusting the interphone audio level. d. Switching the Service Interphone Override switch to ON.

28: The use of the radio system on the Single Aisle aircraft is extremely important for the safe operation of the _______________. a. flight crew. b. aircraft. c. tower communication. d. ground handling.

29. To re-enable the service interphone, the SerViCE INTerphone OVeRriDe P/BSW must be switched to _______________. a. OFF. b. ACTIVE. c. ON. d. ENABLE.