AW 139 AFCS Flashcards
The AFCS functions is supplied by modules
b. In the Modular Avionics Unit (MAU)
The commands to the linear actuators are transmitted through
a. The Control Area Network bus
A dual AP system is installed
c. To keep the aircraft stable if a single system equipment failure occurs
The ATT mode
a. Is the default mode when the autopilot is engaged
When both APs are engaged
c. The two actuators operate in parallel to get full command on an axis
The cyclic FTR switch when pressed allows the pilot to disengage the clutches as the following
a. Power ON/Clutch OFF
The detent switch in the lateral force feel assembly when sensed in open condition
c. The AP cause the command to the lateral trim motor not to operate
The pilot usually uses the cyclic FTR switch for
b. Larger changes in the aircraft pitch and roll attitude
With the cyclic FTR switch pressed while in the HDG mode
c. The AP roll channel ignores the HDG command
The IAS mode automatically dissengages
b. When the air-speed goes below 55 Kts
The ALT mode can disengaged by
b. Any other vertical mode selected in the three-cue configuration
The two AIOP modules inside each MAU operate as follows
c. One module operates as the command lane, while the second operates when the first fails
With the coupled (CPL) LED illuminated, what when the CPL button on the Autopilot Controller is pressed
b. The flight director is uncoupled from the autopilot
When the PFD button on the Guiadance Controller is pressed
a. The pilot determines which PFD is supplying primary data to the autopilot
The FMS AUTO-TUNING feature for the NAV receiver
c. Can be set through the Multifunction Control Display Unit
The FMS enters the dead reckoning (DR) when
c. An invalid GPS and radio position is detected
The FMS choose the best position source among all NAV sensors inputs for the FMS position update
c. The GPS, the radio position and the AHRS
The FMS supplies guidance for the flight of search and rescue patterns about a specified waypoint. The pilot must enter
c. The pattern only
The FMS can be interfaced with the AFCS through the LNAV mode engagement on the Guiadance Controller
b. This mode will be active when some conditions are met only
The software for the FMS function is installed
a. On the NIC/PROC module in the Modular Avionics Unit no.1 and 2
The Decision Height is entered using
c. The Remote Instrument Controller
The DH PUSH TEST button on the RIC
a. Tests the Radio Altimeters
When the PUSH SYNC button is pressed
c. The Heading Bug aligns with current aircraft heading
The Display Controller Controls allows the pilots to
c. Select the BRG no.1 and 2 pointers, the ALT SEL, the HSI, the MAP format and the WX format
Which Modular Avionics Unit (MAU) is considered “Master” between the two?
a. Always the MAU No.2
At what speed is the Indicated VS (Vertical Speed) mode automatically disengaged?
b. When the airspeed goes below 55 KIAS
- What is the function of the primary flight display (PFD) button on the guidance controller?
Allows the pilot to determine which PFD is supplying primary data to the AP.
- What happens if a different PFD button is pressed on the guidance controller with a guidance mode selected?
The guidance mode is disengaged.
- The minimum airspeed to engage a flight director mode(s) is:
60 KIAS
